pub unsafe extern "C" fn sgx_qcnl_get_root_ca_crl(
    root_ca_cdp_url: *const c_char,
    custom_param_b64_string: *const c_char,
    p_root_ca_crl: *mut *mut u8,
    p_root_ca_crl_size: *mut u16
) -> QcnlError