Function netsnmp_sys::register_app_config_handler

pub unsafe extern "C" fn register_app_config_handler(
    token: *const c_char, 
    parser: Option<unsafe extern "C" fn(_: *const c_char, _: *mut c_char)>, 
    releaser: Option<extern "C" fn()>, 
    usageLine: *const c_char
) -> *mut Struct_config_line