add_rpc_method_interface

# File lib/soap/wsdlDriver.rb, line 539
    def add_rpc_method_interface(name, parts_names)
      ::SOAP::Mapping.define_singleton_method(@host, name) do |*arg|
        unless arg.size == parts_names.size
          raise ArgumentError.new(
            "wrong number of arguments (#{arg.size} for #{parts_names.size})")
        end
        @servant.rpc_call(name, *arg)
      end
      @host.method(name)
    end