How to view what package/proc/func is called from RMS ADF UI version 16?

So, we can open Rms.ear via JDeveloper and search the package name, and the java wrapper classes can be shown like below.

But for every "save form" equivalent of v15 forms, how do we determine which base package is called for each ADF screen?

So far, cannot find xmls within the RMS ear where the package oracle.retail.apps.rms.common.model.DbWrappers is imported.

Thanks in advance!

RMSSUB_XITEM.class

//

// Oracle JDeveloper Stub Generated Source

//

package oracle.retail.apps.rms.common.model.DbWrappers;

import oracle.adf.share.logging.ADFLogger;

public class RMSSUB_XITEM

{

    //

    // Constructors

    //

    public RMSSUB_XITEM() { }

    //

    // Fields