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