function _setEditable(bEditable, bOldEditable) {

		if (bEditable != bOldEditable && this.getDomRef()) {
			if (bEditable) {
				this.$().addClass("sapUiFormEdit").addClass("sapUiFormEdit-CTX");
				this.$().removeAttr("aria-readonly");
			} else {
				this.$().removeClass("sapUiFormEdit").removeClass("sapUiFormEdit-CTX");
				this.$().attr("aria-readonly", "true");
			}
		}

		// update edit mode to FormElement (invalidate Labels)
		var aFormContainers = this.getFormContainers();
		for (var i = 0; i < aFormContainers.length; i++) {
			var oFormContainer = aFormContainers[i];
			oFormContainer._setEditable(bEditable);
		}

	}
Association to controls / IDs that label this control (see WAI-ARIA attribute <code>aria-labelledby</code>).

<b>Note:</b> Every <code>Form</code> needs to have some title or label (at least for screen reader support). If no <code>Title</code>
is set, and the <code>Form</code> is not a child or a control with a title, such as {@link sap.m.Panel Panel} or {@link sap.m.Dialog Dialog},
a label or title needs to be assigned using the <code>ariaLabelledBy</code> association.
@since 1.28.0