code: def _get_security_group(self, ports):
      ports = sorted([p for p in set(ports)])
      group_name = "studioml_{}".format(
          hashlib.sha256(pickle.dumps(sorted(ports))).hexdigest()
      )
  
      try:
          response = self.client.describe_security_groups(
              GroupNames=[group_name]
          )
          groupid = response["SecurityGroups"][0]["GroupId"]
  
      except botocore.exceptions.ClientError as e:
          self.logger.error("Error creating security group!")
          self.logger.exception(e)
          response = self.client.create_security_group(
              GroupName=group_name,
              Description="opens ports {} in studioml workers".format(
                  ",".join([str(p) for p in ports])
              ),
          )
  
          groupid = response["GroupId"]
  
          ip_permissions = []
          for port in ports:
              ip_permissions.append(
                  {
                      "IpProtocol": "tcp",
                      "FromPort": int(port),
                      "ToPort": int(port),
                      "IpRanges": [{"CidrIp": "0.0.0.0/0"}],
                  }
              )
  
          response = self.client.authorize_security_group_ingress(
              GroupId=groupid,
              GroupName=group_name,
              IpPermissions=ip_permissions,
          )
  
      return groupid
  
imports: import uuid
  import os
  import base64
  import json
  import yaml
  import six
  import filelock
  import hashlib
  import pickle
  from studio import git_util
  from studio.util import logs
  from studio.storage import storage_util
  from studio.util.gpu_util import memstr2int
  from .cloud_worker_util import insert_user_startup_script
label_desc: Use image node_id 8 for calling the EC2WorkerManager obj's underlying member method code with example usage: obj._get_security_group(ports) and returns: groupid