pub unsafe extern "C" fn gst_webrtc_data_channel_send_string_full(
channel: *mut GstWebRTCDataChannel,
str: *const c_char,
error: *mut *mut GError,
) -> gboolean
pub unsafe extern "C" fn gst_webrtc_data_channel_send_string_full(
channel: *mut GstWebRTCDataChannel,
str: *const c_char,
error: *mut *mut GError,
) -> gboolean