pub unsafe extern "C" fn switch_event_expand_headers_check(
event: *mut switch_event_t,
in_: *const c_char,
var_list: *mut switch_event_t,
api_list: *mut switch_event_t,
recur: u32,
) -> *mut c_charpub unsafe extern "C" fn switch_event_expand_headers_check(
event: *mut switch_event_t,
in_: *const c_char,
var_list: *mut switch_event_t,
api_list: *mut switch_event_t,
recur: u32,
) -> *mut c_char