c_g_output_stream_writev_all_finish

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)
int function(GOutputStream* stream, GAsyncResult* result, size_t* bytesWritten, GError** err) c_g_output_stream_writev_all_finish;

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