code: function(properties_object) {
  
  		for (var i = 0; i < this._count; i++) {
  
  			if (this._content[i].isView) {
  
  				this._content[i].setProperties(properties_object);
  
  			}
  
  		}
  
  	}
docs: Set properties to all views inside `_content`
  @param {Object} properties_object