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