AllControlToUndefined (Groovy 6.0.0-alpha-2)

```
public class AllControlToUndefined
extends StandardControlToUndefined
```
Replaces XML-disallowed control characters and Unicode noncharacters with U+FFFD.

Methods
Type Params	Return Type	Name and description
	`public Optional<String>`	`apply(Character ch)` Applies this function to the given argument. Parameters: `t` - the function argument Returns: the function result

Inherited Methods
Methods inherited from class	Name
`class StandardControlToUndefined`	`apply`

[Java] Class AllControlToUndefined