def __add__(other):
`_registerPrimitive`: register a primitive (defined by `isPrimitive`)
dataset/ETHPy150Open nlloyd/SubliminalCollaborator/libs/zope/interface/common/sequence.py/IReadSequence.__add__--crossover with--dataset/ETHPy150Open ufora/ufora/packages/python/pyfora/PyObjectWalker.py/PyObjectWalker._registerPrimitive