Function wolfSSL_CTX_sess_set_get_cb 

pub unsafe extern "C" fn wolfSSL_CTX_sess_set_get_cb(
    ctx: *mut WOLFSSL_CTX,
    f: Option<unsafe extern "C" fn(ssl: *mut WOLFSSL, arg1: *const c_uchar, arg2: c_int, arg3: *mut c_int) -> *mut WOLFSSL_SESSION>,
)