original_string: protected function last()
      {
          $i = count($this->env->children) - 1;
  
          if (isset($this->env->children[$i])) {
              return $this->env->children[$i];
          }
      }
code: protected function last()
      {
          $i = count($this->env->children) - 1;
  
          if (isset($this->env->children[$i])) {
              return $this->env->children[$i];
          }
      }
code_tokens: protected function last ( ) { $ i = count ( $ this -> env -> children ) - 1 ; if ( isset ( $ this -> env -> children [ $ i ] ) ) { return $ this -> env -> children [ $ i ] ; } }
docstring: Returns last child was appended
  
  @return array|null
docstring_tokens: Returns last child was appended