[BUG]: Incorrect return type of Phalcon\Mvc\Model\Query::getExpression

[StudioMaX]

Describe the bug
While trying to analyze one bug related to Model\Query, I noticed strange behavior of the getExpression method. It has string as its return type.

cphalcon/phalcon/Mvc/Model/Query.zep

Line 1448 in 2ddd6a5

final protected function getExpression(array expr, bool quoting = true) -> string

But actually it always returns an array.

cphalcon/phalcon/Mvc/Model/Query.zep

Lines 2011 to 2023 in 2ddd6a5

	case PHQL_T_SELECT:
	let exprReturn = [
	"type": "select",
	"value": this->_prepareSelect(expr, true)
	];
	break;
	default:
	throw new Exception("Unknown expression type " . exprType);
	}
	return exprReturn;

Expected behavior
I don't know how Zephir handles this, but it seems to be an invalid return type and it must be an array?

Details

• Phalcon version: 4.1.2, actually any
• PHP Version:
• Operating System:
• Installation type: Compiling from source || installing via package manager
• Zephir version (if any):
• Server: Nginx | Apache | Other
• Other related info (Database, table schema):

[niden]

Resolved in #15686