postVisibilityUpdate: function(inSender, inEvent) {
this.$.post.waterfall('onPostVisibility', inEvent);
this.$.controls.waterfall('onPostVisibility', inEvent);
postVisibilityUpdate: function(inSender, inEvent) {
this.$.post.waterfall('onPostVisibility', inEvent);
this.$.controls.waterfall('onPostVisibility', inEvent);