code: def handler(cls, options, config):
      return _create_alarm_handler(options, config)
  
file_path: streamalert/streamalert_cli/metrics_alarms/handler.py
imports: from streamalert.shared import metrics, CLUSTERED_FUNCTIONS
  from streamalert.shared.logger import get_logger
  from streamalert_cli.utils import add_clusters_arg, CLICommand, set_parser_epilog
label_desc: Use image node_id 2 for calling the CreateClusterMetricAlarmCommand obj's underlying member method code with example usage: obj.handler(cls, options, config) and returns: _create_alarm_handler