Panel as an argument to a Java function

I need to pass a panel to a Java function.
The panel have some views inside, even custom views.
How can I define the argument type in Java side for the panel?
What kind of object is a panel in Java?
Thank you!

from B4X Community - Android, iOS, desktop, server and IoT programming tools http://ift.tt/28ZEgxF
via IFTTT