code: def write(self, buf, url):
          
          params = self._split_url(url)
  
          block_blob_service = self._block_blob_service(
              account_name=params["account"], sas_token=params["sas_token"]
          )
  
          block_blob_service.create_blob_from_text(
              container_name=params["container"], blob_name=params["blob"], text=buf
          )
docs: Write buffer to storage at a given url