func verifyTasksMetadata(tasksMetadataRawMsg json.RawMessage) error {
	var tasksMetadataMap map[string]json.RawMessage
	json.Unmarshal(tasksMetadataRawMsg, &tasksMetadataMap)

	if tasksMetadataMap["Tasks"] == nil {
		return notEmptyErrMsg("Tasks")
	}

	var tasksMetadataArray []json.RawMessage
	json.Unmarshal(tasksMetadataMap["Tasks"], &tasksMetadataArray)

	if len(tasksMetadataArray) != 1 {
		return fmt.Errorf("incorrect number of tasks, expected 1, received %d",
			len(tasksMetadataArray))
	}

	return verifyTaskMetadata(tasksMetadataArray[0])
}
func verifyTasksMetadata(tasksMetadataRawMsg json.RawMessage) error {
	var tasksMetadataMap map[string]json.RawMessage
	json.Unmarshal(tasksMetadataRawMsg, &tasksMetadataMap)

	if tasksMetadataMap["Tasks"] == nil {
		return notEmptyErrMsg("Tasks")
	}

	var tasksMetadataArray []json.RawMessage
	json.Unmarshal(tasksMetadataMap["Tasks"], &tasksMetadataArray)

	if len(tasksMetadataArray) != 1 {
		return fmt.Errorf("incorrect number of tasks, expected 1, received %d",
			len(tasksMetadataArray))
	}

	return verifyTaskMetadata(tasksMetadataArray[0])
}
func verifyTasksMetadata ( tasksMetadataRawMsg json . RawMessage ) error { var tasksMetadataMap map [ string ] json . RawMessage json . Unmarshal ( tasksMetadataRawMsg , & tasksMetadataMap ) if tasksMetadataMap [ " " ] == nil { return notEmptyErrMsg ( " " ) } var tasksMetadataArray [ ] json . RawMessage json . Unmarshal ( tasksMetadataMap [ " " ] , & tasksMetadataArray ) if len ( tasksMetadataArray ) != 1 { return fmt . Errorf ( " " , len ( tasksMetadataArray ) ) } return verifyTaskMetadata ( tasksMetadataArray [ 0 ] ) }
// verifyTasksMetadata verifies the number of tasks in tasks metadata.
verifyTasksMetadata verifies the number of tasks in tasks metadata .