pub unsafe extern "C" fn switch_channel_get_scope_variables(
channel: *mut switch_channel_t,
event: *mut *mut switch_event_t,
) -> switch_status_tpub unsafe extern "C" fn switch_channel_get_scope_variables(
channel: *mut switch_channel_t,
event: *mut *mut switch_event_t,
) -> switch_status_t