setMultipleValueSeparator?

[fatzopilot]

Has somebody figured out how to use this?
My impression was it could be used to store multiple distinct values (e.g. email strings) in a single object (e.g. comma separated list of email strings) but I couldn't get it working.
Tried this

final TextAreaItem emailListArea = new TextAreaItem("emailList");
emailListArea.setMultipleValueSeparator(",");

and filled the TextAreaItem form widget with one mail address per line:

test1@test.test
test2@test.test

which gave

test1@test.test\ntest2@test.test

so not the desired result. Is it the right method at all?

Thanks
fatzopilot