code: public Node findEntity(GraphDatabaseService executionEngine, Object[] columnValues) {
  		Map<String, Object> params = params( columnValues );
  		Result result = executionEngine.execute( getFindEntityQuery(), params );
  		return singleResult( result );
  	}
docs: Find the node corresponding to an entity.
  
  @param executionEngine the {@link GraphDatabaseService} used to run the query
  @param columnValues the values in {@link org.hibernate.ogm.model.key.spi.EntityKey#getColumnValues()}
  @return the corresponding node