code: def resolve(self, definitions):
          
          self.resolveport(definitions)
          for op in self.operations.values():
              self.resolvesoapbody(definitions, op)
              self.resolveheaders(definitions, op)
              self.resolvefaults(definitions, op)
docs: Resolve named references to other WSDL objects.  This includes
          cross-linking information (from) the portType (to) the I{soap}
          protocol information on the binding for each operation.
          @param definitions: A definitions object.
          @type definitions: L{Definitions}