<commit_before>var Queue = function(handler_object)
{
  /* interface */

  /**
    * To process calls in order.
    * The method takes a handler and returns a new handler. 
    * A call to that new handler will be executed in order.
    * That means, if the queue is empty, it will be executed instantly,
    * otherwise it will be stored on top of the queue.
    * The signature of the handler does not change.
    * Handlers will be called on the handler_object.
    * @param {Function} handler. A bound message handler.
    * @return a queued handler.
    */
  this.queue = function(handler){};

  /**
    * To stop processing the queue.
    */
  this.stop_processing = function(){};
  
  /**<commit_msg>Some documentation of the queue class.<commit_after>/**
  * @constructor
  *
  *
  * @class
  * A queue to handle message is order, if the handling of messages itself
  * is asynchron, e.g. due to new calls on the scope interface to be 
  * able to handle the message.
  */
var Queue = function(handler_object)
{
  /* interface */

  /**
    * To process calls in order.
    * The method takes a handler and returns a new handler. 
    * A call to that new handler will be executed in order.
    * That means, if the queue is empty, it will be executed instantly,
    * otherwise it will be stored on top of the queue.
    * The signature of the handler does not change.
    * Handlers will be called on the handler_object.
    * @param {Function} handler. A method of the handler_object.
    * @return a queued handler.
    */
  this.queue = function(handler){};

  /**
    * To stop processing the queue.
    */
  this.stop_processing = function(){};
  
  /**
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