Create a new collection in the secret service.
This method returns immediately and completes asynchronously. The secret service may prompt the user. [methodService.prompt]
will be used to handle any prompts that are required.
An alias is a well-known tag for a collection, such as 'default' (ie: the default collection to store items in). This allows
other applications to easily identify and share a collection. If you specify an alias, and a collection with that alias
already exists, then a new collection will not be created. The previous one will be returned instead.
If service is null, then [funcService.get] will be called to get the default [classService
] proxy.
| service |
a secret service object |
| label |
label for the new collection |
| alias |
alias to assign to the collection |
| flags |
currently unused |
| cancellable |
optional cancellation object |
| callback |
called when the operation completes |
| user_data |
data to pass to the callback |