c_gtk_source_completion_context_add_proposals

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
__gshared extern (C)
void function(GtkSourceCompletionContext* context, GtkSourceCompletionProvider* provider, GList* proposals, gboolean finished) c_gtk_source_completion_context_add_proposals;

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