keep getting "AttributeError: module 'keras.utils' has no attribute 'Sequence'"

[Jennifer Crosby]

I'm trying to utilize keras.utils.Sequence as a module in google colab.  I keep getting this error message,  AttributeError: module 'keras.utils' has no attribute 'Sequence', and can't find any solution that works.  
I've tried:

tensorflow.keras.utils.Sequence

keras.utils.np_utils.Sequence

keras.utils.all_utils.Sequence

Nothing seems to work.

I would appreciate some guidance here.  Thanks!

Jennifer