original_string: public function getGraceTtl()
      {
          if (!isset($this->graceTtl)) {
              $this->graceTtl = self::DEFAULT_GRACE_TTL;
          }
  
          return $this->graceTtl;
      }
code: public function getGraceTtl()
      {
          if (!isset($this->graceTtl)) {
              $this->graceTtl = self::DEFAULT_GRACE_TTL;
          }
  
          return $this->graceTtl;
      }
code_tokens: public function getGraceTtl ( ) { if ( ! isset ( $ this -> graceTtl ) ) { $ this -> graceTtl = self :: DEFAULT_GRACE_TTL ; } return $ this -> graceTtl ; }
docstring: Gets grace period
  
  @return int
docstring_tokens: Gets grace period