source/Spiral/ORM/Entities/Loaders/RelationLoader.php
public function isJoined(): bool
    {
        if (!empty($this->options['using'])) {
            return true;
        }

        return in_array($this->getMethod(), [self::INLOAD, self::JOIN, self::LEFT_JOIN]);
    }
public function isJoined(): bool
    {
        if (!empty($this->options['using'])) {
            return true;
        }

        return in_array($this->getMethod(), [self::INLOAD, self::JOIN, self::LEFT_JOIN]);
    }
public function isJoined ( ) : bool { if ( ! empty ( $ this -> options [ 'using' ] ) ) { return true ; } return in_array ( $ this -> getMethod ( ) , [ self :: INLOAD , self :: JOIN , self :: LEFT_JOIN ] ) ; }
Indicated that loaded must generate JOIN statement.

@return bool
Indicated that loaded must generate JOIN statement .