ErrorController (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 ErrorController
```
Marker interface used to indicate that a @Controller is used to render errors. Primarily used to know the error paths that will not need to be secured.
Since:
2.0.0

- Method Summary
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  String getErrorPath()
  Returns the path of the error page.

- Method Detail
  - getErrorPath
```
String getErrorPath()
```
    Returns the path of the error page.
    Returns:
    the error path