public function addSelectExpression(string ...$expression) : self
    {
        $this->selectExpressions = array_merge($this->selectExpressions, $expression);

        return $this;
    }
public function addSelectExpression(string ...$expression) : self
    {
        $this->selectExpressions = array_merge($this->selectExpressions, $expression);

        return $this;
    }
public function addSelectExpression ( string ... $ expression ) : self { $ this -> selectExpressions = array_merge ( $ this -> selectExpressions , $ expression ) ; return $ this ; }
Adds more select expressions

@param string[] $expression,... A variable list of select expressions
@return self For method chaining
Adds more select expressions