/**
* Creates an empty lexical variables list if it does not already exist.
*/
protected function createLexicalVariables()
{
if (!$this->hasLexicalVariables()) {
$this->lexicalUse = Token::_use();
$this->lexicalOpenParen = Token::openParen();
$this->lexicalVariables = new CommaListNode();
$this->lexicalCloseParen = Token::closeParen();
$this->closeParen->after([Token::space(), $this->lexicalUse, Token::space(), $this->lexicalOpenParen, $this->lexicalVariables, $this->lexicalCloseParen]);
}
}
