Returns a referenced parent Source, which holds the credentials for the given source
.
This is useful for collections, where the credentials are usually stored on the collection source, thus shared between child sources.
When ther eis no such parent source, a null is returned, which means the source holds
credentials for itself.
| this | |
| source |
an Source |
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referenced parent Source, which holds credentials, or null . Unref the returned non-NULL Source with unref, when no longer needed. |