original_string: public function modify(string $modify): DateTime
      {
          $dateTime = $this->dateTime()->modify($modify);
  
          return static::fromNative($dateTime);
      }
code: public function modify(string $modify): DateTime
      {
          $dateTime = $this->dateTime()->modify($modify);
  
          return static::fromNative($dateTime);
      }
code_tokens: public function modify ( string $ modify ) : DateTime { $ dateTime = $ this -> dateTime ( ) -> modify ( $ modify ) ; return static :: fromNative ( $ dateTime ) ; }
docstring: Creates an instance with a modified timestamp
  
  Alters the timestamp of the DateTime by incrementing or decrementing in
  a format accepted by strtotime().
  
  @param string $modify A date/time string
  
  @return DateTime
docstring_tokens: Creates an instance with a modified timestamp