An error code used with %GTK_SOURCE_COMPLETION_ERROR in a #GError returned from a completion-related function.
The #GtkSourceCompletionProvider is already bound to the #GtkSourceCompletion object.
The #GtkSourceCompletionProvider is not bound to the #GtkSourceCompletion object.
See Implementation
An error code used with %GTK_SOURCE_COMPLETION_ERROR in a #GError returned from a completion-related function.