AttributeMapper

Type Parameters:

T - the expected type of the mapped attribute

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@FunctionalInterface
public interface AttributeMapper<T>
```
An AttributeMapper maps / massages / transforms an attribute from an AttributeSource

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`java.util.Optional<T>`	`map(AttributeSource attributeSource)`	Map an attribute from the given `AttributeSource`

- Method Detail
  - map
```
@Nonnull
java.util.Optional<T> map(@Nonnull
                          AttributeSource attributeSource)
                   throws AttributeMapperException
```
    Map an attribute from the given AttributeSource
    
    Parameters:
    
    attributeSource - the AttributeSource
    
    Returns:
    
    an Optional containing the mapped attribute or an empty Optional if the targeted attributed does not exist on the AttributeSource
    
    Throws:
    
    AttributeMapperException - if there is an unexpected problem mapping the attribute