# File lib/aws/core/xml/grammar.rb, line 128
        def validate_config_method(method)
          allow_methods = %w(
            rename attribute_name boolean integer long float list force string
            ignore collect_values symbol_value timestamp map_entry map blob
            enum position
          )
          unless allow_methods.include?(method.to_s)
            raise "#{method} cannot be used in configuration"
          end
        end