Retrieving Members with IFSFile.listFiles()

I am trying to use the IFSFile.listFiles() method to walk through a list of
I-Series physical file members, but have only had limited success.

I can get a list of all members in a file by doing the following:

    members = new IFSFile(the400, "/QSYS.LIB/LIBRARY.LIB/FILE.FILE");
    (works)

I would like to be able to get a list of members using wildcards, is there a
way to do this also? I have tried this:

     members = new IFSFile(the400,
"/QSYS.LIB/LIBRARY.LIB/FILE.FILE/MATCH*.MBR");
     (fails)

and this:

     members = new IFSFile(the400,
"/QSYS.LIB/LIBRARY.LIB/FILE.FILE/MATCH*");
     (fails)

and get only an empty array. I am looking for members whose names begin with
the characters MATCH.

Also, IBM's documentation would indicate that the following is equivalent to
indicating the library and file alone as in my first code statement, but
this also has returned to me an empty array:

     members = new IFSFile(the400,
"/QSYS.LIB/LIBRARY.LIB/FILE.FILE/%ALL%.MBR");
     (fails)

Maybe I have the syntax incorrect.  Can you help?