Make roundTrip generic on response type

lib/client/client.go

@@ -70,21 +70,23 @@ func (c *Client) receive(expectedID uint32) (any, error) {
 	return inner, nil
 }
 
-func (c *Client) roundTrip(req any) (any, error) {
+func roundTrip[T any](c *Client, req any) (*T, error) {
 	id, err := c.send(req)
 	if err != nil {
 		return nil, err
 	}
-	return c.receive(id)
+	resp, err := c.receive(id)
+	if err != nil {
+		return nil, err
+	}
+	typed, ok := resp.(*T)
+	if !ok {
+		return nil, fmt.Errorf("unexpected response: %T", resp)
+	}
+	return typed, nil
 }
 
 func (c *Client) PICOBOOT() error {
-	resp, err := c.roundTrip(&RequestPICOBOOT{})
+	_, err := roundTrip[ResponsePICOBOOT](c, &RequestPICOBOOT{})
-	if err != nil {
 	return err
 }
-	if _, ok := resp.(*ResponsePICOBOOT); !ok {
-		return fmt.Errorf("unexpected response: %T", resp)
-	}
-	return nil
-}