h.callReuseReq = b
	return h
}

// IgnoreNilConn will ignore nil connections when calling.
// This will make Call return nil instead of ErrDisconnected when the connection is nil.
// This may only be set ONCE before use.
func (h *SingleHandler[Req, Resp]) IgnoreNilConn() *SingleHandler[Req, Resp] {
	if h.ignoreNilConn {