How scm delim-none option is managed by plain API?

Hi, I have a custom ant task that performs some operation and then a check-in of some loaded files. What method can I use to apply the delim-none option?

I'm currently using the ICheckInOperation and the requestCheckin method on a IShareable object that I've retrieved.

EDIT:
I found these lines in the CommitDilemmaHandler class:

     * Mismatched line delimiters were found in the files to be committed.
     * The commit operation can force the line delimiters to be converted
     * consistently or it can change the line delimiter to be none and
     * re-attempt the commit.  Alternatively, the files can be skipped from
     * the commit.

What I'd like to do is to change the lime delimiter to be none but I cannot find any method to enable this behaviour.

Thanks,
Michele.