docstr: send SSM command to the given nodes
docstr_tok: ["send","SSM","command","to","the","given","nodes"]
code: def _send_command_to_node(
      self,
      document_name: str,
      parameters: Dict[str, List[str]],
      node_id: str,
  ) -> Dict[str, Any]:
      """send SSM command to the given nodes"""
      logger.debug(
          "Sending SSM command to {} node(s). Document name: {}. "
          "Parameters: {}.".format(node_id, document_name, parameters)
      )
      response = self.ssm_client.send_command(
          InstanceIds=[node_id],
          DocumentName=document_name,
          Parameters=parameters,
          MaxConcurrency="1",
          MaxErrors="0",
      )
      return response
  
imports: import copy
  import hashlib
  import json
  import logging
  import os
  import time
  from enum import Enum
  from typing import Any, Callable, Dict, List, Union
  import botocore
  from ray.autoscaler._private.aws.utils import client_cache, resource_cache
  from ray.autoscaler.tags import NODE_KIND_HEAD, TAG_RAY_CLUSTER_NAME, TAG_RAY_NODE_KIND
label_desc: Use image node_id 7 for calling the CloudwatchHelper obj's underlying member method code with example usage: obj._send_command_to_node(document_name, parameters, node_id) and returns: response