Missing methods on pkg_resources.VersionConflict

typeshed: https://github.com/python/typeshed/blob/caefaa6af9203a243709c21eeb5f2669af63b846/third_party/3/pkg_resources/__init__.pyi#L205

pkg_resources definition: https://github.com/pypa/setuptools/blob/master/pkg_resources/__init__.py#L258