# core.models:Modifier


A set of modifiers for message routing.


Usage

``` python
core.models:Modifier
```


## Attributes

| Name | Description |
|----|----|
| [NONE](#NONE) |  |
| [TO_PROGRESS_LABEL](#TO_PROGRESS_LABEL) |  |

------------------------------------------------------------------------


### NONE


`NONE=``0`


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### TO_PROGRESS_LABEL


`TO_PROGRESS_LABEL=``1`