private static function getFieldEntryKey(FieldNode $node)
    {
        return $node->alias ? $node->alias->value : $node->name->value;
    }
private static function getFieldEntryKey(FieldNode $node)
    {
        return $node->alias ? $node->alias->value : $node->name->value;
    }
private static function getFieldEntryKey ( FieldNode $ node ) { return $ node -> alias ? $ node -> alias -> value : $ node -> name -> value ; }
Implements the logic to compute the key of a given fields entry

@return string
Implements the logic to compute the key of a given fields entry