Get System info in custom RPC call

Question

Hello I would like to be able to call

fn system_name(&self) -> RpcResult<String> {
    Ok(self.info.impl_name.clone())
}

inside a custom rpc call our custom rpc call is implemented like that:

io.extend_with(ApiServer::to_delegate(Api::new(
    client.clone(),
    pool.clone(),
    graph,
    Some(aureum_node_runtime::TransactionConverter),
    network.clone(),
    signers,
    overrides.clone(),
    backend.clone(),
    is_authority,
    block_data_cache.clone(),
)));