Lps 48418

@marcellustavares @mdelapenya @mtambara

This is a regression by the method renaming at 513f96cc40ae1b40ea4223440c1d254017317ee4 which changed "Ddm" to "DDM".

This broke the CacheField generated method's callback contract, causing the ddmForm field is not being cached.

I did not undo the renaming, but make the @CacheField takes in a customized method name to support this kind of unconventional field names.

Now the running time for DLFileEntryFinderTest should get back to normal (It was over 40mins on the CI server)