pub unsafe extern "C" fn switch_ivr_session_transfer(
session: *mut switch_core_session_t,
extension: *const c_char,
dialplan: *const c_char,
context: *const c_char,
) -> switch_status_tpub unsafe extern "C" fn switch_ivr_session_transfer(
session: *mut switch_core_session_t,
extension: *const c_char,
dialplan: *const c_char,
context: *const c_char,
) -> switch_status_t