def describe_keyvalue(self, index, value, description):
        """Describes key-value pair at given index."""
        description.append_description_of(index)                        \
                   .append_text(': ')                                   \
                   .append_description_of(value)
Describes key-value pair at given index.
stackoverflow/venv/lib/python3.6/site-packages/hamcrest/library/collection/isdict_containingentries.py