Asks this to lookup for stored credentials for source.
The out_credentials is populated with them. If the result is not null, then it should be
freed with free when no longer needed.
Default implementation returns false and sets NOT_SUPPORTED error.
If an error occurs, the function sets throws and returns false.
| this | |
| source |
an Source |
| cancellable |
optional Cancellable object, or null |
| out_credentials |
an NamedParameters to be set with stored credentials |
|
true on success, false on error |