Similar to pa_proplist_unset() but takes an array of keys to
* remove. The array should be terminated by a NULL pointer. Returns -1
* on failure, otherwise the number of entries actually removed (which
* might even be 0, if there were no matching entries to
* remove). \since 0.9.11
Similar to pa_proplist_unset() but takes an array of keys to * remove. The array should be terminated by a NULL pointer. Returns -1 * on failure, otherwise the number of entries actually removed (which * might even be 0, if there were no matching entries to * remove). \since 0.9.11