This PR removes some hard codes.
Please see my PR changes, although CONSTRUCTOR_ARG_PREFIX is final, but it is still possible to update iteratively, although it is unlikely, but it is still recommended to modify the hard code.
Comment From: snicoll
Thanks for the PR and sorry it took so long to process it. I don't mind too much about the number there and the class has been deprecated in the meantime so we'll keep things as they are.