copy fails for empty models #601
Description
import roman_datamodels.datamodels as rdm
m = rdm.MosaicModel()
m.copy()fails with
AttributeError: 'NoneType' object has no attribute 'copy'
{{ message }}
copy fails for empty models #601import roman_datamodels.datamodels as rdm
m = rdm.MosaicModel()
m.copy()fails with
AttributeError: 'NoneType' object has no attribute 'copy'