docs: public Relationship findRelationship(GraphDatabaseService executionEngine, AssociationKey associationKey, RowKey rowKey) {
  		Object[] relationshipValues = relationshipValues( associationKey, rowKey );
  		Object[] queryValues = ArrayHelper.concat( associationKey.getEntityKey().getColumnValues(), relationshipValues );
  		Result result = executionEngine.execute( findRelationshipQuery, params( queryValues ) );
  		return singleResult( result );
  	}