ReadonlyidentifierUnique identifier, cannot change on runtime.
The identifier is also added on data attribute of ghost text widget, allowing different providers to style the ghost text differently.
ProtectedoptionsName of the provider to be displayed in the user interface.
The method called when user requests inline completions.
The implicit request (on typing) vs explicit invocation are distinguished
by the value of triggerKind in the provided context.
Optionaltrigger: InlineCompletionTriggerKind
An example inline completion provider using history to populate suggestions.