Gets full meta data (expect their annotations and relationships) from is ILX ID

def get_entity(self, ilx_id: str) -> dict:
        """ Gets full meta data (expect their annotations and relationships) from is ILX ID """
        ilx_id = self.fix_ilx(ilx_id)
        url = self.base_url + "ilx/search/identifier/{identifier}?key={api_key}".format(
            identifier = ilx_id,
            api_key = self.api_key,
        )
        return self.get(url)