code: def resolve(self, definitions):
          
          for op in self.operations.values():
              if op.input is None:
                  op.input = Message(Element('no-input'), definitions)
              else:
                  qref = qualify(op.input, self.root, definitions.tns)
                  msg = definitions.messages.get(qref)
                  if msg is None:
                      raise Exception("msg '%s', not-found" % op.input)
                  else:
                      op.input = msg
              if op.output is None:
                  op.output = Message(Element('no-output'), definitions)
              else:
                  qref = qualify(op.output, self.root, definitions.tns)
                  msg = definitions.messages.get(qref)
                  if msg is None:
                      raise Exception("msg '%s', not-found" % op.output)
                  else:
                      op.output = msg
              for f in op.faults:
                  qref = qualify(f.message, self.root, definitions.tns)
                  msg = definitions.messages.get(qref)
                  if msg is None:
                      raise Exception("msg '%s', not-found" % f.message)
                  f.message = msg
docs: Resolve named references to other WSDL objects.
          @param definitions: A definitions object.
          @type definitions: L{Definitions}