static _getMetamodelInterface(oModel) {
			if (!oModel) {
				return undefined;
			}

			let oInterface;
			if (oModel.isA("sap.ui.model.odata.v4.ODataModel")) {
				oInterface = Object.create(FieldHelp.#oMetaModelInterfaceV4);
			} else if (oModel.isA("sap.ui.model.odata.v2.ODataModel")) {
				oInterface = Object.create(FieldHelp.#oMetaModelInterfaceV2);
			} else {
				return undefined;
			}

			oInterface.oMetaModel = oModel.getMetaModel();
			return oInterface;
		}
Gets the meta model interface for the given OData model's meta model or <code>undefined</code>, if the model
is not a <code>sap.ui.model.odata.v4.ODataModel</code> or <code>sap.ui.model.odata.v2.ODataModel</code>.

@param {sap.ui.model.Model} [oModel] The model
@returns {sap.ui.core.fieldhelp.MetaModelInterface|undefined} The meta model interface of the given model's
  meta model or <code>undefined</code>, if the model is not set or is not an OData V4 or OData V2 model