parameters: (self, proto)
docstring: Copies this to the matching proto in descriptor_pb2.
  
      Args:
        proto: An empty proto instance from descriptor_pb2.
  
      Raises:
        Error: If self couldnt be serialized, due to to few constructor arguments.
docstring_summary: Copies this to the matching proto in descriptor_pb2.
docstring_tokens: Copies this to the matching proto in descriptor_pb2 .
function: def CopyToProto(self, proto):
      """Copies this to the matching proto in descriptor_pb2.
  
      Args:
        proto: An empty proto instance from descriptor_pb2.
  
      Raises:
        Error: If self couldnt be serialized, due to to few constructor arguments.
      """
      if (self.file is not None and
          self._serialized_start is not None and
          self._serialized_end is not None):
        proto.ParseFromString(self.file.serialized_pb[
            self._serialized_start:self._serialized_end])
      else:
        raise Error('Descriptor does not contain serialization.')
function_tokens: def CopyToProto ( self , proto ) : if ( self . file is not None and self . _serialized_start is not None and self . _serialized_end is not None ) : proto . ParseFromString ( self . file . serialized_pb [ self . _serialized_start : self . _serialized_end ] ) else : raise Error ( 'Descriptor does not contain serialization.' )