src/Executor/ReferenceExecutor.php
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