original_string: public function isCallable($value, $message = '')
      {
          $this->assertion->setActual($value);
  
          return $this->assertion->to->satisfy('is_callable', $message);
      }
code: public function isCallable($value, $message = '')
      {
          $this->assertion->setActual($value);
  
          return $this->assertion->to->satisfy('is_callable', $message);
      }
code_tokens: public function isCallable ( $ value , $ message = '' ) { $ this -> assertion -> setActual ( $ value ) ; return $ this -> assertion -> to -> satisfy ( 'is_callable' , $ message ) ; }
docstring: Performs a predicate assertion to check if actual
  value is callable.
  
  @param mixed  $value
  @param string $message
docstring_tokens: Performs a predicate assertion to check if actual value is callable .