code: def __init__(
      self,
      bucket: str,
      region: str,
  ):
      self._session = Session()
      self._client = self._session.client("s3", region_name=region)
      self.bucket = bucket
  
file_path: dstack/src/dstack/_internal/server/services/storage.py
imports: from typing import Optional
  from dstack._internal.server import settings
label_desc: Use image node_id 1 to create a new S3Storage object  with example: obj = S3Storage(bucket, region)