original_string: public function into(Map $target)
      {
          $this->walk(function ($value, $key) use ($target) {
              $target->set($key, $value);
          });
          return $target;
      }
code: public function into(Map $target)
      {
          $this->walk(function ($value, $key) use ($target) {
              $target->set($key, $value);
          });
          return $target;
      }
code_tokens: public function into ( Map $ target ) { $ this -> walk ( function ( $ value , $ key ) use ( $ target ) { $ target -> set ( $ key , $ value ) ; } ) ; return $ target ; }
docstring: Put all of this map's elements into the target and return the target.
  
  ```
  $words = new MapOfStrings([ 'foo', 'bar' ]);
  $words->map('strlen($_0)')->into(new MapOfInts)->sum(); // 6
  ```
  
  Use when you've mapped your elements into a different type, and you
  want to fluently perform operations on the new type. In the example,
  the sum of the words' lengths was calculated.
  
  @return $target
  @api
docstring_tokens: Put all of this map s elements into the target and return the target .