code: def create(cls, request_bytes, custom_headers=None):
          
  
          if custom_headers is None:
              custom_headers = {}
  
          api_client = client.ApiClient(cls._get_api_context())
          endpoint_url = cls._ENDPOINT_URL_CREATE
          response_raw = api_client.post(endpoint_url, request_bytes,
                                         custom_headers)
  
          return BunqResponseStr.cast_from_bunq_response(
              cls._process_for_uuid(response_raw)
          )
docs: Create a new public attachment. Create a POST request with a payload
          that contains a binary representation of the file, without any JSON
          wrapping. Make sure you define the MIME type (i.e. image/jpeg, or
          image/png) in the Content-Type header. You are required to provide a
          description of the attachment using the X-Bunq-Attachment-Description
          header.
  
          :type custom_headers: dict[str, str]|None
  
          :rtype: BunqResponseStr