c_g_data_input_stream_read_upto_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)
char* function(GDataInputStream* stream, GAsyncResult* result, gsize* length, GError** error) c_g_data_input_stream_read_upto_finish;

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