docs: def verify_id_n_version(id, version):
      """Given an ``id`` and ``version``, verify the identified content exists.
  
      """
      stmt = _get_sql('verify-id-and-version.sql')
      args = dict(id=id, version=version)
  
      with db_connect() as db_conn:
          with db_conn.cursor() as cursor:
              cursor.execute(stmt, args)
              try:
                  valid = cursor.fetchone()[0]
              except TypeError:
                  raise NotFound(join_ident_hash(id, version))
      return True