c_gtk_source_file_loader_load_async

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(GtkSourceFileLoader* loader, int ioPriority, GCancellable* cancellable, GFileProgressCallback progressCallback, void* progressCallbackData, GDestroyNotify progressCallbackNotify, GAsyncReadyCallback callback, void* userData) c_gtk_source_file_loader_load_async;

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