Starts a new completion with the specified #GtkSourceCompletionContext and a list of potential candidate providers for completion.
It can be convenient for showing a completion on-the-fly, without the need to add or remove providers to the #GtkSourceCompletion.
Another solution is to add providers with gtksource.completion.Completion.addProvider, and implement gtksource.completion_provider.CompletionProvider.match for each provider.
a list of #GtkSourceCompletionProvider, or null.
The #GtkSourceCompletionContext with which to start the completion.
true if it was possible to the show completion window.
Starts a new completion with the specified #GtkSourceCompletionContext and a list of potential candidate providers for completion.
It can be convenient for showing a completion on-the-fly, without the need to add or remove providers to the #GtkSourceCompletion.
Another solution is to add providers with gtksource.completion.Completion.addProvider, and implement gtksource.completion_provider.CompletionProvider.match for each provider.