code: public ChannelBuffer formatTreesV1(final List<Tree> trees) {
      throw new BadRequestException(HttpResponseStatus.NOT_IMPLEMENTED, 
          "The requested API endpoint has not been implemented", 
          this.getClass().getCanonicalName() + 
          " has not implemented formatTreesV1");
    }
docs: Format a list of tree objects. Note that the list may be empty if no trees
  were present.
  @param trees A list of one or more trees to serialize
  @return A ChannelBuffer object to pass on to the caller
  @throws BadRequestException if the plugin has not implemented this method