original_string: public function true()
      {
          $message = ['%s is {{not|}} true', $this->value];
          $this->assert(($this->value === true), $message);
  
          return $this;
      }
code: public function true()
      {
          $message = ['%s is {{not|}} true', $this->value];
          $this->assert(($this->value === true), $message);
  
          return $this;
      }
code_tokens: public function true ( ) { $ message = [ '%s is {{not|}} true' , $ this -> value ] ; $ this -> assert ( ( $ this -> value === true ) , $ message ) ; return $ this ; }
docstring: Assert that the value is true.
  
  @throws AssertionFailureException
  
  @return self
docstring_tokens: Assert that the value is true .