)
Not documented.
Source
void queryUsageAndQuota(StorageUsageCallback usageCallback, [StorageErrorCallback errorCallback]) {
if (errorCallback != null) {
_blink.BlinkDeprecatedStorageQuota.instance.queryUsageAndQuota_Callback_2_(unwrap_jso(this), unwrap_jso(usageCallback), unwrap_jso(errorCallback));
return;
}
_blink.BlinkDeprecatedStorageQuota.instance.queryUsageAndQuota_Callback_1_(unwrap_jso(this), unwrap_jso(usageCallback));
return;
}