code: def create_gateway(
      self,
      instance_name: str,
      ssh_key_pub: str,
      region: str,
      project_id: str,
  ) -> LaunchedGatewayInfo:
      ec2 = self.session.resource("ec2", region_name=region)
      ec2_client = self.session.client("ec2", region_name=region)
      tags = [
          {"Key": "Name", "Value": instance_name},
          {"Key": "owner", "Value": "dstack"},
          {"Key": "dstack_project", "Value": project_id},
      ]
      if settings.DSTACK_VERSION is not None:
          tags.append(
              {
                  "Key": "dstack_version",
                  "Value": settings.DSTACK_VERSION,
              }
          )
      response = ec2.create_instances(
          **aws_resources.create_instances_struct(
              disk_size=10,
              image_id=aws_resources.get_gateway_image_id(ec2_client),
              instance_type="t2.micro",
              iam_instance_profile_arn=None,
              user_data=get_gateway_user_data(ssh_key_pub),
              tags=tags,
              security_group_id=aws_resources.create_gateway_security_group(
                  ec2_client, project_id
              ),
              spot=False,
          )
      )
      instance = response[0]
      instance.wait_until_running()
      instance.reload()  # populate instance.public_ip_address
  
      return LaunchedGatewayInfo(
          instance_id=instance.instance_id,
          region=region,
          ip_address=instance.public_ip_address,
      )
  
imports: from concurrent.futures import ThreadPoolExecutor, as_completed
  from typing import Dict, List, Optional
  import boto3
  import botocore.client
  import botocore.exceptions
  import dstack._internal.core.backends.aws.resources
  import dstack.version
  from dstack._internal import settings
  from dstack._internal.core.backends.aws.config import AWSConfig
  from dstack._internal.core.backends.base.compute import Compute, get_gateway_user_data, get_instance_name, get_user_data
  from dstack._internal.core.backends.base.offers import get_catalog_offers
  from dstack._internal.core.errors import NoCapacityError
  from dstack._internal.core.models.backends.aws import AWSAccessKeyCreds
  from dstack._internal.core.models.backends.base import BackendType
  from dstack._internal.core.models.instances import InstanceAvailability, InstanceOffer, InstanceOfferWithAvailability, InstanceState, LaunchedGatewayInfo, LaunchedInstanceInfo
  from dstack._internal.core.models.runs import Job, Requirements, Run
  from dstack._internal.utils.logging import get_logger
label_desc: Use image node_id 6 for calling the AWSCompute obj's underlying member method code with example usage: obj.create_gateway(instance_name, ssh_key_pub, region, project_id) and returns: LaunchedGatewayInfo