lib/cocina/models/event.rb in cocina-models-0.63.0 vs lib/cocina/models/event.rb in cocina-models-0.63.1

@@ -1,20 +1,20 @@
 # frozen_string_literal: true
 
 module Cocina
   module Models
     class Event < Struct
-      attribute :structuredValue, Types::Strict::Array.of(DescriptiveValue).default([])
+      attribute :structuredValue, Types::Strict::Array.of(DescriptiveValue).default([].freeze)
       # Description of the event (creation, publication, etc.).
       attribute :type, Types::Strict::String.meta(omittable: true)
       # The preferred display label to use for the event in access systems.
       attribute :displayLabel, Types::Strict::String.meta(omittable: true)
-      attribute :date, Types::Strict::Array.of(DescriptiveValue).default([])
-      attribute :contributor, Types::Strict::Array.of(Contributor).default([])
-      attribute :location, Types::Strict::Array.of(DescriptiveValue).default([])
-      attribute :identifier, Types::Strict::Array.of(DescriptiveValue).default([])
-      attribute :note, Types::Strict::Array.of(DescriptiveValue).default([])
+      attribute :date, Types::Strict::Array.of(DescriptiveValue).default([].freeze)
+      attribute :contributor, Types::Strict::Array.of(Contributor).default([].freeze)
+      attribute :location, Types::Strict::Array.of(DescriptiveValue).default([].freeze)
+      attribute :identifier, Types::Strict::Array.of(DescriptiveValue).default([].freeze)
+      attribute :note, Types::Strict::Array.of(DescriptiveValue).default([].freeze)
       attribute :valueLanguage, DescriptiveValueLanguage.optional.meta(omittable: true)
-      attribute :parallelEvent, Types::Strict::Array.of(DescriptiveParallelEvent).default([])
+      attribute :parallelEvent, Types::Strict::Array.of(DescriptiveParallelEvent).default([].freeze)
     end
   end
 end