code: function(event_name) {
  
  		if (Lava.schema.DEBUG && ['mouseenter', 'mouseleave', 'mouseover', 'mouseout'].indexOf(event_name) != -1)
  			Lava.t("The following events: mouseenter, mouseleave, mouseover and mouseout are served by common alias - mouse_events");
  
  		if (this._event_usage_counters[event_name]) {
  
  			this._event_usage_counters[event_name]++;
  
  		} else {
  
  			this._event_usage_counters[event_name] = 1;
  			this._initEvent(event_name);
  
  		}
  
  	}
docs: Register an event consumer and start routing that event
  @param {string} event_name