docs: def drop_keyspace(keyspace, contact_points=None, port=None, cql_user=None, cql_pass=None):
      '''
      Drop a keyspace if it exists in a Cassandra cluster.
  
      :param keyspace:       The keyspace to drop.
      :type  keyspace:       str
      :param contact_points: The Cassandra cluster addresses, can either be a string or a list of IPs.
      :type  contact_points: str | list[str]
      :param cql_user:       The Cassandra user if authentication is turned on.
      :type  cql_user:       str
      :param cql_pass:       The Cassandra user password if authentication is turned on.
      :type  cql_pass:       str
      :param port:           The Cassandra cluster port, defaults to None.
      :type  port:           int
      :return:               The info for the keyspace or False if it does not exist.
      :rtype:                dict
  
      CLI Example:
  
      .. code-block:: bash
  
          salt 'minion1' cassandra_cql.drop_keyspace keyspace=test
  
          salt 'minion1' cassandra_cql.drop_keyspace keyspace=test contact_points=minion1
      '''
      existing_keyspace = keyspace_exists(keyspace, contact_points, port)
      if existing_keyspace:
          query = '''drop keyspace {0};'''.format(keyspace)
          try:
              cql_query(query, contact_points, port, cql_user, cql_pass)
          except CommandExecutionError:
              log.critical('Could not drop keyspace.')
              raise
          except BaseException as e:
              log.critical('Unexpected error while dropping keyspace: %s', e)
              raise
  
      return True