Allow for shallow copies of attributes, adjusting the behavior of #3642
Config.copy_on_model_validation
is now a str enum of ["", "deep", "shallow"]
corresponding to reference, deep copy, shallow copy.
Allow for shallow copies of attributes, adjusting the behavior of #3642
Config.copy_on_model_validation
is now a str enum of ["", "deep", "shallow"]
corresponding to reference, deep copy, shallow copy.