def parse_map(cls, data, dist=None):
        """Parse a map of entry point groups"""
        if isinstance(data, dict):
            data = data.items()
        else:
            data = split_sections(data)
        maps = {}
        for group, lines in data:
            if group is None:
                if not lines:
                    continue
                raise ValueError("Entry points must be listed in groups")
            group = group.strip()
            if group in maps:
                raise ValueError("Duplicate group name", group)
            maps[group] = cls.parse_group(group, lines, dist)
        return maps
Parse a map of entry point groups
product/gradle-plugin/src/main/python/pkg_resources/__init__.py