Class: Udb::Portfolio

Inherits:
TopLevelDatabaseObject show all
Defined in:
lib/udb/obj/portfolio.rb

Overview

Holds information about a Portfolio (certificate or profile). The inherited “data” member is YAML data from the architecture for this portfolio object.

Direct Known Subclasses

ProcCertModel, Profile

Defined Under Namespace

Classes: ExtraNote, InScopeParameter, Recommendation, RevisionHistory

Instance Method Summary collapse

Constructor Details

#initialize(obj_yaml, yaml_path, arch)

Parameters:

  • data_path (String)

    Path to yaml file

  • obj_yaml (Hash{String => Object})

    Contains contents of Portfolio yaml file (put in @data)

  • yaml_path (String, Pathname)
  • arch (ConfiguredArchitecture)

    Entire database of RISC-V architecture standards



380
381
382
# File 'lib/udb/obj/portfolio.rb', line 380

def initialize(obj_yaml, yaml_path, arch)
  super # Calls parent class with same args I got
end

Instance Method Details

#all_in_scope_exts_with_param(param) ⇒ Array<Extension>

Returns Sorted list of all in-scope extensions that define this parameter in the database and the parameter is in-scope.

Parameters:

Returns:

  • (Array<Extension>)

    Sorted list of all in-scope extensions that define this parameter in the database and the parameter is in-scope.



821
# File 'lib/udb/obj/portfolio.rb', line 821

def all_in_scope_exts_with_param(param) = []

#all_in_scope_exts_without_param(param) ⇒ Array<Extension>

Returns List of all in-scope extensions that define this parameter in the database but the parameter is out-of-scope.

Parameters:

Returns:

  • (Array<Extension>)

    List of all in-scope extensions that define this parameter in the database but the parameter is out-of-scope.



826
# File 'lib/udb/obj/portfolio.rb', line 826

def all_in_scope_exts_without_param(param) = []

#all_in_scope_paramsArray<InScopeParameter>

Returns List of parameters specified by any extension in portfolio.

Returns:

  • (Array<InScopeParameter>)

    List of parameters specified by any extension in portfolio.



805
# File 'lib/udb/obj/portfolio.rb', line 805

def all_in_scope_params = []

#all_out_of_scope_paramsArray<Parameter>

Returns Sorted list of parameters out of scope across all in scope extensions.

Returns:

  • (Array<Parameter>)

    Sorted list of parameters out of scope across all in scope extensions.



812
# File 'lib/udb/obj/portfolio.rb', line 812

def all_out_of_scope_params = []

#baseInteger

Returns 32 or 64.

Returns:

  • (Integer)

    32 or 64



391
# File 'lib/udb/obj/portfolio.rb', line 391

def base = @data["base"]

#csr_presence(csr_name) ⇒ String

Returns Given an CSR csr_name, return the presence as a string. If the CSR name isn’t found in the portfolio, return “-”.

Returns:

  • (String)

    Given an CSR csr_name, return the presence as a string. If the CSR name isn’t found in the portfolio, return “-”.



581
582
583
584
585
586
587
588
589
# File 'lib/udb/obj/portfolio.rb', line 581

def csr_presence(csr_name)
  @csr_presence ||= {}

  return @csr_presence[csr_name] unless @csr_presence[csr_name].nil?

  presence_obj = csr_presence_obj(csr_name)

  @csr_presence[csr_name] = presence_obj.nil? ? "-" : presence_obj.to_s
end

#csr_presence_obj(csr_name) ⇒ Presence

Returns Given an CSR csr_name, return the presence. If the CSR name isn’t found in the portfolio, return nil.

Returns:

  • (Presence)

    Given an CSR csr_name, return the presence. If the CSR name isn’t found in the portfolio, return nil.



552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
# File 'lib/udb/obj/portfolio.rb', line 552

def csr_presence_obj(csr_name)
  @csr_presence_obj ||= {}

  return @csr_presence_obj[csr_name] unless @csr_presence_obj[csr_name].nil?

  csr = arch.csr(csr_name)

  raise "Can't find CSR object '#{csr_name}' in arch class" if csr.nil?

  is_mandatory = mandatory_ext_reqs.any? do |ext_req|
    csr.defined_by_condition.satisfied_by_cfg_arch?(to_cfg_arch) == SatisfiedResult::Yes
  end

  is_optional = !is_mandatory && optional_ext_reqs.any? do |ext_req|
    csr.defined_by_condition.satisfied_by_cfg_arch?(to_cfg_arch_for_optional) == SatisfiedResult::Yes
  end

  @csr_presence_obj[csr_name] =
    if is_mandatory
      Presence::Mandatory
    elsif is_optional
      Presence::Option
    else
      nil
    end
end

#descriptionString

Returns Large enough to need its own heading (generally one level deeper than the “introduction”).

Returns:

  • (String)

    Large enough to need its own heading (generally one level deeper than the “introduction”).



388
# File 'lib/udb/obj/portfolio.rb', line 388

def description = @data["description"]

#extension_note(ext_name) ⇒ String?

Returns:

  • (String)

    The note associated with extension ext_name

  • (nil)

    if there is no note for ext_name



618
619
620
621
622
623
624
# File 'lib/udb/obj/portfolio.rb', line 618

def extension_note(ext_name)
  # Get extension information from YAML for passed in extension name.
  ext_data = @data["extensions"][ext_name]
  raise "Cannot find extension named #{ext_name}" if ext_data.nil?

  return ext_data["note"] unless ext_data.nil?
end

#extension_presence(ext_name) ⇒ String

Returns Given an extension ext_name, return the presence as a string. If the extension name isn’t found in the portfolio, return “-”.

Returns:

  • (String)

    Given an extension ext_name, return the presence as a string. If the extension name isn’t found in the portfolio, return “-”.



407
408
409
410
411
# File 'lib/udb/obj/portfolio.rb', line 407

def extension_presence(ext_name)
  presence_obj = extension_presence_obj(ext_name)

  presence_obj.nil? ? "-" : presence_obj.to_s
end

#extension_presence_obj(ext_name) ⇒ Presence

Returns Given an extension ext_name, return the presence. If the extension name isn’t found in the portfolio, return nil.

Returns:

  • (Presence)

    Given an extension ext_name, return the presence. If the extension name isn’t found in the portfolio, return nil.



398
399
400
401
402
403
# File 'lib/udb/obj/portfolio.rb', line 398

def extension_presence_obj(ext_name)
  # Get extension information from YAML for passed in extension name.
  ext_data = @data["extensions"][ext_name]

  ext_data.nil? ? nil : Presence.from_yaml(ext_data["presence"])
end

#extra_notesObject



928
929
930
931
932
933
934
935
936
# File 'lib/udb/obj/portfolio.rb', line 928

def extra_notes
  return @extra_notes unless @extra_notes.nil?

  @extra_notes = []
  @data["extra_notes"]&.each do |extra_note|
    @extra_notes << ExtraNote.new(extra_note)
  end
  @extra_notes
end

#extra_notes_for_presence(desired_presence_obj) ⇒ Array<String>

Parameters:

Returns:

  • (Array<String>)


939
940
941
942
943
944
945
946
947
# File 'lib/udb/obj/portfolio.rb', line 939

def extra_notes_for_presence(desired_presence_obj)
  extra_notes.select do |extra_note|
    if desired_presence_obj == Presence::Mandatory
      extra_note.presence_obj == desired_presence_obj
    else
      extra_note.presence_obj != Presence::Mandatory
    end
  end
end

#in_scope_csrs(design) ⇒ Array<Csr>

Returns Unsorted list of all CSRs associated with extensions listed as mandatory or optional in portfolio. Uses CSRs provided by the minimum version of the extension that meets the extension requirement.

Parameters:

  • design (Design)

    The design

Returns:

  • (Array<Csr>)

    Unsorted list of all CSRs associated with extensions listed as mandatory or optional in portfolio. Uses CSRs provided by the minimum version of the extension that meets the extension requirement.

Raises:

  • (ArgumentError)


737
738
739
740
741
742
743
744
# File 'lib/udb/obj/portfolio.rb', line 737

def in_scope_csrs(design)
  raise ArgumentError, "Require an PortfolioDesign object but got a #{design.class} object" unless design.is_a?(PortfolioDesign)

  return @in_scope_csrs unless @in_scope_csrs.nil?

  @in_scope_csrs =
    in_scope_min_satisfying_extension_versions.map { |ext_ver| ext_ver.in_scope_csrs(design) }.flatten.uniq
end

#in_scope_exception_codes(design) ⇒ Array<ExceptionCode>

TODO: See github.com/riscv-software-src/riscv-unified-db/issues/291 TODO: Still needs work and haven’t created in_scope_interrupt_codes yet. TODO: Extensions should provide conditional information (“when” statements?)

that we evaluate here to determine if a particular exception code can
actually be generated in a design.
Also, probably shouldn't be calling "ext?" since that doesn't the in_scope lists of extensions.

Parameters:

  • design (Design)

    The design

Returns:

  • (Array<ExceptionCode>)

    Unsorted list of all in-scope exception codes.

Raises:

  • (ArgumentError)


754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
# File 'lib/udb/obj/portfolio.rb', line 754

def in_scope_exception_codes(design)
  raise ArgumentError, "Require an PortfolioDesign object but got a #{design.class} object" unless design.is_a?(PortfolioDesign)

  return @in_scope_exception_codes unless @in_scope_exception_codes.nil?

  @in_scope_exception_codes =
    in_scope_min_satisfying_extension_versions.reduce([]) do |list, ext_version|
      ecodes = ext_version.exception_codes
      next list if ecodes.nil?

      ecodes.each do |ecode|
        list << ecode
      end
      list
    end.uniq
end

#in_scope_ext_reqs(desired_presence = nil) ⇒ Array<PortfolioExtensionRequirement>

Parameters:

  • desired_presence (String, Hash{String => T.untyped}, Presence, nil) (defaults to: nil)

Returns:



635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
# File 'lib/udb/obj/portfolio.rb', line 635

def in_scope_ext_reqs(desired_presence = nil)
  in_scope_ext_reqs = []

  # Convert desired_present argument to Presence object if not nil.
  desired_presence_converted =
    if desired_presence.nil?
      nil
    else
      desired_presence.is_a?(Presence) ? desired_presence : Presence.from_yaml(desired_presence)
    end

  missing_ext = T.let(false, T::Boolean)

  @data["extensions"]&.each do |ext_name, ext_data|
    next if ext_name[0] == "$"

    # Does extension even exist?
    # If not, don't raise an error right away so we can find all of the missing extensions and report them all.
    ext = arch.extension(ext_name)
    if ext.nil?
      Udb.logger.warn "Extension #{ext_name} for #{name} not found in database"
      missing_ext = true
    else
      actual_presence = ext_data["presence"]    # Could be a String or Hash
      raise "Missing extension presence for extension #{ext_name}" if actual_presence.nil?

      # Convert presence String or Hash to object.
      actual_presence_obj = Presence.from_yaml(actual_presence)

      match =
        if desired_presence.nil?
          true # Always match
        else
          if desired_presence_converted == Presence::Mandatory
            actual_presence_obj == Presence::Mandatory
          else
            # treat all optional types as equal
            actual_presence_obj != Presence::Mandatory
          end
        end

      if match
        in_scope_ext_reqs <<
          if ext_data.key?("version")
            PortfolioExtensionRequirement.new(
              ext_name, ext_data["version"], arch: @arch,
              presence: actual_presence_obj, note: ext_data["note"], req_id: "REQ-EXT-#{ext_name}")
          else
            PortfolioExtensionRequirement.new(
              ext_name, ">= 0", arch: @arch,
              presence: actual_presence_obj, note: ext_data["note"], req_id: "REQ-EXT-#{ext_name}")
          end
      end
    end
  end

  raise "One or more extensions referenced by #{name} missing in database" if missing_ext

  in_scope_ext_reqs.sort_by!(&:name)
end

#in_scope_extensionsArray<Extension>

Returns Sorted list of all mandatory or optional extensions in portfolio. Each extension can have multiple versions (contains ExtensionVersion array).

Returns:

  • (Array<Extension>)

    Sorted list of all mandatory or optional extensions in portfolio. Each extension can have multiple versions (contains ExtensionVersion array).



698
699
700
701
702
703
704
705
706
# File 'lib/udb/obj/portfolio.rb', line 698

def in_scope_extensions
  return @in_scope_extensions unless @in_scope_extensions.nil?

  @in_scope_extensions = in_scope_ext_reqs.map do |ext_req|
    ext_req.extension
  end.reject(&:nil?)  # Filter out extensions that don't exist yet.

  @in_scope_extensions.sort_by!(&:name)
end

#in_scope_instructions(design) ⇒ Array<Instruction>

Returns Sorted list of all instructions associated with extensions listed as mandatory or optional in portfolio. Uses instructions provided by the minimum version of the extension that meets the extension requirement.

Parameters:

  • design (Design)

    The design

Returns:

  • (Array<Instruction>)

    Sorted list of all instructions associated with extensions listed as mandatory or optional in portfolio. Uses instructions provided by the minimum version of the extension that meets the extension requirement.

Raises:

  • (ArgumentError)


724
725
726
727
728
729
730
731
# File 'lib/udb/obj/portfolio.rb', line 724

def in_scope_instructions(design)
  raise ArgumentError, "Require an PortfolioDesign object but got a #{design.class} object" unless design.is_a?(PortfolioDesign)

  return @in_scope_instructions unless @in_scope_instructions.nil?

  @in_scope_instructions =
    in_scope_min_satisfying_extension_versions.map { |ext_ver| ext_ver.in_scope_instructions(design) }.flatten.uniq.sort
end

#in_scope_interrupt_codes(design) ⇒ Array<InterruptCode>

TODO: Actually implement this to use Design. See in_scope_exception_codes() above.

Parameters:

  • design (Design)

    The design

Returns:

  • (Array<InterruptCode>)

    Unsorted list of all in-scope interrupt codes.

Raises:

  • (ArgumentError)


774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
# File 'lib/udb/obj/portfolio.rb', line 774

def in_scope_interrupt_codes(design)
  raise ArgumentError, "Require an PortfolioDesign object but got a #{design.class} object" unless design.is_a?(PortfolioDesign)

  return @in_scope_interrupt_codes unless @in_scope_interrupt_codes.nil?

  @in_scope_interrupt_codes =
    in_scope_min_satisfying_extension_versions.reduce([]) do |list, ext_version|
      icodes = ext_version.interrupt_codes
      next list if icodes.nil?

      icodes.each do |icode|
        list << icode
      end
      list
    end.uniq
end

#in_scope_min_satisfying_extension_versionsExtensionVersion

Returns List of all mandatory or optional extensions listed in portfolio. The minimum version of each extension that satisfies the extension requirements is provided.

Returns:

  • (ExtensionVersion)

    List of all mandatory or optional extensions listed in portfolio. The minimum version of each extension that satisfies the extension requirements is provided.



710
711
712
713
714
715
716
717
718
# File 'lib/udb/obj/portfolio.rb', line 710

def in_scope_min_satisfying_extension_versions
  return @in_scope_min_satisfying_extension_versions unless @in_scope_min_satisfying_extension_versions.nil?

  @in_scope_min_satisfying_extension_versions = in_scope_ext_reqs.map do |ext_req|
    ext_req.satisfying_versions.min
  end.reject(&:nil?)  # Filter out extensions that don't exist yet.

  @in_scope_min_satisfying_extension_versions
end

#in_scope_params(ext_req) ⇒ Array<InScopeParameter>

Returns Sorted list of extension parameters from portfolio for given extension.

Parameters:

Returns:

  • (Array<InScopeParameter>)

    Sorted list of extension parameters from portfolio for given extension.



809
# File 'lib/udb/obj/portfolio.rb', line 809

def in_scope_params(ext_req) = []

#instruction_presence(inst_name) ⇒ Presence?

Returns Given an instruction inst_name, return the presence as a string. If the instruction name isn’t found in the portfolio, return “-”.

Parameters:

  • inst_name (String)

Returns:

  • (Presence, nil)

    Given an instruction inst_name, return the presence as a string. If the instruction name isn’t found in the portfolio, return “-”.



540
541
542
543
544
545
546
547
548
# File 'lib/udb/obj/portfolio.rb', line 540

def instruction_presence(inst_name)
  @instruction_presence ||= {}

  return @instruction_presence[inst_name] unless @instruction_presence[inst_name].nil?

  presence_obj = instruction_presence_obj(inst_name)

  @instruction_presence[inst_name] = presence_obj.nil? ? "-" : presence_obj.to_s
end

#instruction_presence_obj(inst_name) ⇒ Presence?

Returns Given an instruction inst_name, return the presence. If the instruction name isn’t found in the portfolio, return nil.

Parameters:

  • inst_name (String)

Returns:

  • (Presence, nil)

    Given an instruction inst_name, return the presence. If the instruction name isn’t found in the portfolio, return nil.



416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
# File 'lib/udb/obj/portfolio.rb', line 416

def instruction_presence_obj(inst_name)
  @instruction_presence_obj ||= {}

  return @instruction_presence_obj[inst_name] unless @instruction_presence_obj[inst_name].nil?

  inst = arch.instruction(inst_name)

  raise "Can't find instruction object '#{inst_name}' in arch class" if inst.nil?

  is_mandatory = mandatory_ext_reqs.any? do |ext_req|
    inst.defined_by_condition.satisfied_by_cfg_arch?(to_cfg_arch) == SatisfiedResult::Yes
  end

  is_optional = !is_mandatory && optional_ext_reqs.any? do |ext_req|
    inst.defined_by_condition.satisfied_by_cfg_arch?(to_cfg_arch_for_optional) == SatisfiedResult::Yes
  end

  @instruction_presence_obj[inst_name] =
    if is_mandatory
      Presence::Mandatory
    elsif is_optional
      Presence::Option
    else
      nil
    end
end

#introductionString

Returns Small enough (~1 paragraph) to be suitable immediately after a higher-level heading.

Returns:

  • (String)

    Small enough (~1 paragraph) to be suitable immediately after a higher-level heading.



385
# File 'lib/udb/obj/portfolio.rb', line 385

def introduction = @data["introduction"]

#mandatory_ext_reqsObject



626
# File 'lib/udb/obj/portfolio.rb', line 626

def mandatory_ext_reqs = in_scope_ext_reqs(Presence::Mandatory)

#optional_ext_reqsObject



627
# File 'lib/udb/obj/portfolio.rb', line 627

def optional_ext_reqs = in_scope_ext_reqs(Presence::Option)

#out_of_scope_params(ext_name) ⇒ Array<Parameter>

Returns Sorted list of parameters that are out of scope for named extension.

Parameters:

  • ext_name (String)

    Extension name

Returns:

  • (Array<Parameter>)

    Sorted list of parameters that are out of scope for named extension.



816
# File 'lib/udb/obj/portfolio.rb', line 816

def out_of_scope_params(ext_name) = []

#recommendationsObject



961
962
963
964
965
966
967
968
969
# File 'lib/udb/obj/portfolio.rb', line 961

def recommendations
  return @recommendations unless @recommendations.nil?

  @recommendations = []
  @data["recommendations"]&.each do |recommendation|
    @recommendations << Recommendation.new(recommendation)
  end
  @recommendations
end

#revision_historyObject



903
904
905
906
907
908
909
910
911
# File 'lib/udb/obj/portfolio.rb', line 903

def revision_history
  return @revision_history unless @revision_history.nil?

  @revision_history = []
  @data["revision_history"].each do |rev|
    @revision_history << RevisionHistory.new(rev)
  end
  @revision_history
end

#to_cfg_archConfiguredArchitecture

returns a config arch that treats the Portfolio like a partial config



486
487
488
489
490
491
492
493
494
495
# File 'lib/udb/obj/portfolio.rb', line 486

def to_cfg_arch
  @cfg_arch_for_mandatory ||= begin
    Tempfile.create do |f|
      f.write YAML.dump(to_config)
      f.fsync

      @cfg_arch.config.info.resolver.cfg_arch_for(Pathname.new f.path)
    end
  end
end

#to_cfg_arch_for_optionalConfiguredArchitecture

returns a config arch that treats the optional extensions in Portfolio like a partial config



499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
# File 'lib/udb/obj/portfolio.rb', line 499

def to_cfg_arch_for_optional
  @cfg_arch_for_optional ||= begin
    contents =
      {
        "$schema" => "config_schema.json#",
        "kind" => "architecture configuration",
        "type" => "partially configured",
        "name" => name,
        "description" => description,
        "params" => all_in_scope_params.map do |p|
          if p.single_value?
            [p.name, p.value]
          else
            nil
          end
        end.compact.to_h,
        "mandatory_extensions" => optional_ext_reqs.map do |ext_req|
          {
            "name" => ext_req.name,
            "version" => \
              if ext_req.requirement_specs.size == 1
                ext_req.requirement_specs.fetch(0).to_s
              else
                ext_req.requirement_specs.map(&:to_s)
              end
          }
        end,
        "additional_extensions" => true
      }
    Tempfile.create do |f|
      f.write YAML.dump(contents)
      f.fsync

      @cfg_arch.config.info.resolver.cfg_arch_for(Pathname.new f.path)
    end
  end
end

#to_configHash{String => T.untyped}

Returns:

  • (Hash{String => T.untyped})


444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
# File 'lib/udb/obj/portfolio.rb', line 444

def to_config
  {
    "$schema" => "config_schema.json#",
    "kind" => "architecture configuration",
    "type" => "partially configured",
    "name" => name,
    "description" => description,
    "params" => all_in_scope_params.map do |p|
      if p.single_value?
        [p.name, p.value]
      else
        nil
      end
    end.compact.to_h,
    "mandatory_extensions" => mandatory_ext_reqs.map do |ext_req|
      {
        "name" => ext_req.name,
        "version" => \
          if ext_req.requirement_specs.size == 1
            ext_req.requirement_specs.fetch(0).to_s
          else
            ext_req.requirement_specs.map(&:to_s)
          end
      }
    end,
    "non_mandatory_extensions" => optional_ext_reqs.map do |ext_req|
      {
        "name" => ext_req.name,
        "version" => \
          if ext_req.requirement_specs.size == 1
            ext_req.requirement_specs.fetch(0).to_s
          else
            ext_req.requirement_specs.map(&:to_s)
          end
      }
    end,
    "additional_extensions" => true
  }
end

#uses_optional_types?Boolean

Returns Does the profile differentiate between different types of optional.

Returns:

  • (Boolean)

    Does the profile differentiate between different types of optional.



792
793
794
795
796
797
# File 'lib/udb/obj/portfolio.rb', line 792

def uses_optional_types?
  return @uses_optional_types unless @uses_optional_types.nil?

  @uses_optional_types =
    in_scope_ext_reqs(Presence::Option).any? { |ext_req| ext_req.presence != Presence::Option }
end

#versionGem::Version

Returns Semantic version of the Portfolio.

Returns:

  • (Gem::Version)

    Semantic version of the Portfolio



394
# File 'lib/udb/obj/portfolio.rb', line 394

def version = Gem::Version.new(@data["version"])

#version_greatest_presence(ext_name, ext_versions) ⇒ Array<String>

Returns the greatest presence string for each of the specified versions.

Parameters:

Returns:

  • (Array<String>)


593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
# File 'lib/udb/obj/portfolio.rb', line 593

def version_greatest_presence(ext_name, ext_versions)
  presences = []

  # See if any extension requirement in this profile lists this version as either mandatory or optional.
  ext_versions.map do |v|
    greatest_presence = T.let(nil, T.nilable(Presence))

    in_scope_ext_reqs.each do |ext_req|
      if ext_req.satisfied_by?(v)
        presence = extension_presence_obj(ext_name)

        unless presence.nil?
          greatest_presence = presence unless greatest_presence == Presence::Mandatory
        end
      end
    end

    presences << (greatest_presence.nil? ? "-" : greatest_presence.to_s_concise)
  end

  presences
end