fallbackSrcHandler = () => {
			oImage.detachError(fallbackSrcHandler);

			const sFallbackSrc = this._oIconFormatter.formatSrc(BindingResolver.resolveValue(oItem.fallbackSrc, this));

			if (sFallbackSrc && sFallbackSrc !== oImage.getSrc()) {
				oImage.setSrc(sFallbackSrc);
			}
		}
Assigns a value to a form field.
@param {object} oFormFieldData Object with key and respective value property to set.
The name of the property can be named based on the type of the ObjectGroupItem as defined in the manifest.
@private
@ui5-restricted