def FindFieldByName(self, full_name):
full_name = _NormalizeFullyQualifiedName(full_name)<EOL>message_name, _, field_name = full_name.rpartition('<STR_LIT:.>')<EOL>message_descriptor = self.FindMessageTypeByName(message_name)<EOL>return message_descriptor.fields_by_name[field_name]<EOL>
Loads the named field descriptor from the pool.

        Args:
          full_name: The full name of the field descriptor to load.

        Returns:
          The field descriptor for the named field.