Function gio_sys::g_subprocess_communicate_utf8_finish

pub unsafe extern fn g_subprocess_communicate_utf8_finish(subprocess: *mut GSubprocess,
                                                          result: *mut GAsyncResult,
                                                          stdout_buf: *mut *mut c_char,
                                                          stderr_buf: *mut *mut c_char,
                                                          error: *mut *mut GError)
                                                          -> gboolean