_setFieldHelpDocumentationRefs(oElement, sControlProperty, aDocumentationRefs) {
			const sControlID = oElement.getId();
			this.mDocuRefControlToFieldHelp[sControlID] ||= {};
			if (aDocumentationRefs.length > 0) {
				this.mDocuRefControlToFieldHelp[sControlID][sControlProperty] = aDocumentationRefs;
			} else {
				delete this.mDocuRefControlToFieldHelp[sControlID][sControlProperty];
				if (Object.keys(this.mDocuRefControlToFieldHelp[sControlID]).length === 0) {
					delete this.mDocuRefControlToFieldHelp[sControlID];
				}
			}
			this._updateHotspots();
		}
Sets the field help information, given as documentation reference URNs, for the given control and the given
control property and calls asynchronously the <code>fnUpdateHotspotsCallback</code> as given in
{@link #activate}.

@param {sap.ui.core.Element} oElement
  The control
@param {string} [sControlProperty]
  The name of the control property
@param {Array<string>} aDocumentationRefs
  An array of documentation reference annotation URNs, e.g.
  <code>["urn:sap-com:documentation:key?=~key&type=~type&id=~id&origin=~origin"]</code>