Unlock items or collections in the secret service.
The secret service may not be able to unlock items individually, and may
unlock an entire collection instead.
If @service is NULL, then secret_service_get() will be called to get
the default #SecretService proxy.
This method may block indefinitely and should not be used in user
interface threads. The secret service may prompt the user.
secret_service_prompt() will be used to handle any prompts that show up.
Unlock items or collections in the secret service.
The secret service may not be able to unlock items individually, and may unlock an entire collection instead.
If @service is NULL, then secret_service_get() will be called to get the default #SecretService proxy.
This method may block indefinitely and should not be used in user interface threads. The secret service may prompt the user. secret_service_prompt() will be used to handle any prompts that show up.