PathMapper (Spring Boot API)

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 PathMapper
```
Strategy interface used to provide a mapping between an endpoint ID and the root path where it will be exposed.
Since:
2.0.0

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Deprecated Methods
Modifier and Type	Method	Description
`static String`	`getRootPath(List<PathMapper> pathMappers, EndpointId endpointId)`	Resolve the root path for the specified `endpointId` from the given path mappers.
`String`	`getRootPath(EndpointId endpointId)`	Resolve the root path for the specified `endpointId`.
`static PathMapper`	`useEndpointId()`	Deprecated. since 2.1.0 in favor of `getRootPath(List, EndpointId)` with a `null` list

- Method Detail
  - getRootPath
```
String getRootPath(EndpointId endpointId)
```
    Resolve the root path for the specified endpointId.
    Parameters:
    endpointId - the id of an endpoint
    Returns:
    the path of the endpoint or null if this mapper doesn't support the given endpoint ID
  - useEndpointId
```
@Deprecated
static PathMapper useEndpointId()
```
    Deprecated.
    since 2.1.0 in favor of getRootPath(List, EndpointId) with a null list
    Returns an PathMapper that uses the endpoint ID as the path.
    Returns:
    an PathMapper that uses the lowercase endpoint ID as the path
  - getRootPath
```
static String getRootPath(List<PathMapper> pathMappers,
                          EndpointId endpointId)
```
    Resolve the root path for the specified endpointId from the given path mappers. If no mapper matches then the ID itself is returned.
    Parameters:
    pathMappers - the path mappers (may be null)
    endpointId - the id of an endpoint
    Returns:
    the path of the endpoint