code: public <K, V> void putAll(Map<K, V> mapToAddTo, 
                                Map<? extends K, ? extends V> mapToAdd) {
          mapToAddTo.putAll(mapToAdd);
      }
docs: Put all of the given key and value pairs in the given map.
  
  @param <K> The component type of the keys
  @param <V> The component type of the values
  
  @param mapToAddTo The map to add the key/value pairs to
  @param mapToAdd The key/value pairs to put in the map
  
  @see Map#putAll(Map)