code: public List<MetadataReference> queryByMetadataParent(long parentId)
  			throws SQLException {
  
  		QueryBuilder<MetadataReference, Void> qb = queryBuilder();
  		qb.where().eq(MetadataReference.COLUMN_PARENT_ID, parentId);
  		List<MetadataReference> metadataReferences = qb.query();
  
  		return metadataReferences;
  	}
docs: Query by the metadata parent ids
  
  @param parentId
  parent id
  @return metadata references
  @throws SQLException
  upon failure