Function deferOrCancel

deferOrCancel(delay: number, callback?: ConvertFunction): ConvertFunction
Builds function which delays the synchronization for given msec and cancels the execution if transformer is triggered again. In contrast to debounceOrCancel this method ensures that after the given delay at least one update is performed.
Parameters
- delay: number
  time in msec to wait before synchronizing.
- Optionalcallback: ConvertFunction
  callback which transforms the value.
Returns ConvertFunction
transformer function.
Example
```
let a = new Clazz({prop: 2});
let b = new Clazz();
Binding.for(a, b)
   .syncToRight("prop",
       deferOrCancel(100)
    ).enable().syncToRightNow();
b.prop // is undefined but will be set after 100msec to 2
```
- Defined in Transformers.ts:163