isContextSharingEnabled(sLayer) {
			if (sLayer !== Layer.CUSTOMER) {
				return Promise.resolve(false);
			}
			return Settings.getInstance()
			.then(function(oSettings) {
				return oSettings.getIsContextSharingEnabled({layer: sLayer});
			});
		}
Checks if context sharing is enabled.

@param {string} sLayer - Layer to get correct connector
@returns {Promise<boolean>} Resolves to a boolean indicating if context sharing is enabled
@private
@deprecated
@ui5-restricted sap.ui.fl.write.api.ContextSharingAPI