ConverterFunction

```
@ConsumerType
public interface ConverterFunction
```
An functional interface with a convert method that is passed the original object and the target type to perform a custom conversion.
This interface can also be used to register a custom error handler.

Field Summary

Fields
Modifier and Type Field Description

static java.lang.Object CANNOT_HANDLE
Special object to indicate that a custom converter rule or error handler cannot handle the conversion.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`java.lang.Object`	`apply(java.lang.Object obj, java.lang.reflect.Type targetType)`	Convert the object into the target type.

- Field Detail
  - CANNOT_HANDLE
```
static final java.lang.Object CANNOT_HANDLE
```
    Special object to indicate that a custom converter rule or error handler cannot handle the conversion.
- Method Detail
  - apply
```
java.lang.Object apply(java.lang.Object obj,
                       java.lang.reflect.Type targetType)
                throws java.lang.Exception
```
    Convert the object into the target type.
    
    Parameters:
    
    obj - The object to be converted. This object will never be null as the convert function will not be invoked for null values.
    
    targetType - The target type.
    
    Returns:
    
    The conversion result or CANNOT_HANDLE to indicate that the convert function cannot handle this conversion. In this case the next matching rule or parent converter will be given a opportunity to convert.
    
    Throws:
    
    java.lang.Exception - the operation can throw an exception if the conversion can not be performed due to incompatible types.