# File lib/aws/core/option_grammar.rb, line 55
          def validate(value, context = nil)
            true
  #             raise format_error("timestamp value", context) unless
  #               case value
  #               when String
  #                 value =~ /^\d+$/ or value =~ /^\d{4}-\d{2}-d{2}T\d{2}:\d{2}:\d{2}Z$/
  #               when String then value =~ /^2009-12-04T20:56:05.000Z\d+$/
  #               when Integer then true
  #               when DateTime then true
  #               when Timestamp then true
  #               when Date then true
  #               else false
  #               end
  #             end
  #               value.respond_to? :to_str
          end