In perusing the stack for examples of mask usage and manipulation, I came across this funtction:

https://github.com/lsst/afw/blob/master/python/lsst/afw/image/image/multiband.py#L481-L490

It looks like there are two issues with it:

1) lsst.afw.image.MaskX has no attribute removeMaskPlaneDict, so any call to the function results in:

AttributeError: type object 'lsst.afw.image.image.image.MaskX' has no attribute 'removeMaskPlaneDict'

The fix appears to be removeMaskPlaneDict --> removeMaskPlane

2) the function ignores the variable name, i.e. does not pass it to the call to [_sic_!] removeMaskPlaneDict(). Having corrected the function name to removeMaskPlane, the we get the following:

TypeError: removeMaskPlane(): incompatible function arguments. The following argument types are supported:

    1. (arg0: str) -> None

The fix here is to pass name to the function.

Finally, I also noticed that the MultibandMask class is missing the removeAndClearMaskPlane() function. I don't think this was intentional, so one should be added.