Used to deprecate what ever you want
        
        
            
- Source:
(require("react-cmf/lib/deprecated"))(fn, msg, log) → {any}
    display a deprecated message on the first call of a function.
    Parameters:
| Name | Type | Description | 
|---|---|---|
| fn | function | the function to deprecate | 
| msg | String | the message to display | 
| log | function | [description] | 
- Source:
Returns:
    the content of fn;
- Type
- any