KeyError catched but never raised?

[jensens]

At

z3c.relationfield/src/z3c/relationfield/relation.py

Lines 125 to 127 in 18ffe3f

	try:
	return intids.getObject(id)
	except KeyError:

We catch a KeyError, but according to the called getObject implementation it is never raised:
https://github.com/zopefoundation/zope.intid/blob/3ae7ac3232167ae6d54dd920ce7fd179ba128615/src/zope/intid/__init__.py#L83-L89
Instead a zope.intid.interfaces.ObjectMissingError is raised.

[icemac]

According to https://github.com/zopefoundation/zope.intid/blob/3ae7ac3232167ae6d54dd920ce7fd179ba128615/src/zope/intid/interfaces.py#L10 zope.intid.interfaces.ObjectMissingError is subclass of KeyError.

@jensens What do you suggest to resolve this issue?

[jensens]

I did not dug that deep. OK, then I need to dig further, why to_object does not return None in my case.