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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def collect_and_execute_subfields( self, return_type: GraphQLObjectType, field_nodes: List[FieldNode], path: ResponsePath, result: Any, ) -> AwaitableOrValue[Dict[str, Any]]: """Collect sub-fields to execute to complete this value."""

        sub_field_nodes = self.collect_subfields(return_type, field_nodes)
        return self.execute_fields(return_type, result, path, sub_field_nodes)