| connection_string | string | no | no | A storage account connection string. |
| container | string | no | no | The name of the container from which to download blobs. This field supports interpolation functions. |
| prefix | string | yes | no | An optional path prefix, if set only objects with the prefix are consumed. The value defaults to ``. |
| scanner | scanner | no | no | The scanner by which the stream of bytes consumed will be broken out into individual messages. Scanners are useful for processing large sources of data without holding the entirety of it within memory. For example, the csv scanner allows you to process individual CSV rows without loading the entire CSV file in memory at once. |
| delete_objects | bool | yes | no | Whether to delete downloaded objects from the blob once they are processed. The value defaults to false. |
