How to produce Ultimate's using user supplied Industry LDFs (instead of LDFs gleaned by Chain Ladder Library methods from supplied claims triangles)

[Ruchi208910]

I need to use industry benchmark LDFs for a particular claims data reserving, without all the different Reserving methods calculating LDFs themselves from the supplied claims data, and I need that these methods produce Ultimate's using the supplied claims data and the inputted industry benchmark LDFs by the user. Can you please point me to the section where this is being done in the reference notes, if this is not there in the reference notes, can you please suggest how to get this done?

[jbogaardt]

You'd use the DevelopmentConstant estimator: https://chainladder-python.readthedocs.io/en/latest/user_guide/development.html#developmentconstant