# File lib/aws/option_grammar.rb, line 57
        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