code: def mkparam(self, method, pdef, object):
          
          marshaller = self.marshaller()
          content = \
              Content(tag=pdef[0],
                      value=object,
                      type=pdef[1],
                      real=pdef[1].resolve())
          return marshaller.process(content)
docs: Builds a parameter for the specified I{method} using the parameter
          definition (pdef) and the specified value (object).
          @param method: A method name.
          @type method: str
          @param pdef: A parameter definition.
          @type pdef: tuple: (I{name}, L{xsd.sxbase.SchemaObject})
          @param object: The parameter value.
          @type object: any
          @return: The parameter fragment.
          @rtype: L{Element}