code: def find_implementations(project, resource, offset, resources=None,
                           task_handle=taskhandle.NullTaskHandle()):
      
      name = worder.get_name_at(resource, offset)
      this_pymodule = project.get_pymodule(resource)
      pyname = rope.base.evaluate.eval_location(this_pymodule, offset)
      if pyname is not None:
          pyobject = pyname.get_object()
          if not isinstance(pyobject, rope.base.pyobjects.PyFunction) or \
             pyobject.get_kind() != 'method':
              raise exceptions.BadIdentifierError('Not a method!')
      else:
          raise exceptions.BadIdentifierError('Cannot resolve the identifier!')
  
      def is_defined(occurrence):
          if not occurrence.is_defined():
              return False
  
      def not_self(occurrence):
          if occurrence.get_pyname().get_object() == pyname.get_object():
              return False
      filters = [is_defined, not_self,
                 occurrences.InHierarchyFilter(pyname, True)]
      finder = occurrences.Finder(project, name, filters=filters)
      if resources is None:
          resources = project.get_python_files()
      job_set = task_handle.create_jobset('Finding Implementations',
                                          count=len(resources))
      return _find_locations(finder, resources, job_set)
docs: Find the places a given method is overridden.
  
      Finds the places a method is implemented.  Returns a list of
      `Location`\s.