function _observeChanges(oChanges){

		if (oChanges.name === "editable") {
			_setEditable.call(this, oChanges.current, oChanges.old);
		} else if (oChanges.name === "formContainers") {
			_formContainerChanged.call(this, oChanges.mutation, oChanges.child);
		}

	}
Method used to propagate the <code>Title</code> control ID of a container control
(like a <code>Dialog</code> control) to use it as aria-label in the <code>Form</code>.
So the <code>Form</code> must not have an own title.
@param {string} sTitleID <code>Title</code> control ID
@private
@return {this} Reference to <code>this</code> to allow method chaining