Function indy_sys::ledger::indy_build_get_revoc_reg_request

#[no_mangle]
pub unsafe extern "C" fn indy_build_get_revoc_reg_request(
    command_handle: Handle,
    submitter_did: CString,
    revoc_reg_def_id: CString,
    timestamp: i64,
    cb: Option<ResponseStringCB>
) -> Error