func Invite(c context.Context, to, from string) error {
	req := &pb.XmppInviteRequest{
		Jid: &to,
	}
	if from != "" {
		req.FromJid = &from
	}
	res := &pb.XmppInviteResponse{}
	return internal.Call(c, "xmpp", "SendInvite", req, res)
}
func Invite(c context.Context, to, from string) error {
	req := &pb.XmppInviteRequest{
		Jid: &to,
	}
	if from != "" {
		req.FromJid = &from
	}
	res := &pb.XmppInviteResponse{}
	return internal.Call(c, "xmpp", "SendInvite", req, res)
}
func Invite ( c context . Context , to , from string ) error { req := & pb . XmppInviteRequest { Jid : & to , } if from != " " { req . FromJid = & from } res := & pb . XmppInviteResponse { } return internal . Call ( c , " " , " " , req , res ) }
// Invite sends an invitation. If the from address is an empty string
// the default (yourapp@appspot.com/bot) will be used.
Invite sends an invitation . If the from address is an empty string the default ( yourapp