text: from typing import Optional
  
  
  def make_s3_urn(s3_uri: str, env: str, suffix: Optional[str] = None) -> str:
  
      if not s3_uri.startswith("s3://"):
          raise ValueError("S3 URIs should begin with 's3://'")
      # remove S3 prefix (s3://)
      s3_name = s3_uri[5:]
  
      if s3_name.endswith("/"):
          s3_name = s3_name[:-1]
  
      if suffix is not None:
          return f"urn:li:dataset:(urn:li:dataPlatform:s3,{s3_name}_{suffix},{env})"
  
      return f"urn:li:dataset:(urn:li:dataPlatform:s3,{s3_name},{env})"
  