class_docstr: A list of alerts within a single merge window which match on their merge keys.
class_docstr_tok: ["A","list","of","alerts","within","a","single","merge","window","which","match","on","their","merge","keys","."]
docstr: Initialize the group with the oldest alert remaining.
docstr_tok: ["Initialize","the","group","with","the","oldest","alert","remaining","."]
code: def __init__(self, alert):
      """Initialize the group with the oldest alert remaining."""
      self.alerts = [alert]
  
file_path: streamalert/streamalert/alert_merger/main.py
imports: from datetime import datetime
  import json
  import os
  import boto3
  from streamalert.shared.alert import Alert, AlertCreationError
  from streamalert.shared.alert_table import AlertTable
  from streamalert.shared.logger import get_logger
  from streamalert.shared.metrics import ALERT_MERGER_NAME, MetricLogger
label_desc: Use image node_id 1 to create a new AlertMergeGroup object  with example: obj = AlertMergeGroup(alert)