SecuredAccess (Spring Boot Security for Vaadin 2.2.0 API)

```
@Target({TYPE,METHOD,ANNOTATION_TYPE})
@Retention(RUNTIME)
@Documented
public @interface SecuredAccess
```
This annotation is used to secure routes and endpoints. It can also be used as meta-annotation to create reusable access rule annotations.

Field Summary

Fields
Modifier and Type Fields Description

static String EXPRESSION_NOT_SET
The default string used when no expression has been set.

Optional Element Summary

Optional Elements
Modifier and Type	Optional Element	Description
`boolean`	`checkLayout`	Returns whether the `parent layout chain` should also be checked for access.
`Class<? extends AccessEvaluator>`	`evaluator`	A `programmatic evaluator` to control access.
`String`	`value`	A Spring Security expression to control access.

- Field Detail
  - EXPRESSION_NOT_SET
```
static final String EXPRESSION_NOT_SET
```
    The default string used when no expression has been set.
- Element Detail
  - value
```
String value
```
    A Spring Security expression to control access.
    If both an expression and an evaluator are set, both must be satisfied to grant access.
    
    Returns:
    
    a Spring Security expression
    
    See Also:
    
    Expression-Based Access Control
    
    Default:
    
    "___NOT_SET___"
- - evaluator
```
Class<? extends AccessEvaluator> evaluator
```
    A programmatic evaluator to control access.
    If both an expression and an evaluator are set, both must be satisfied to grant access.
    
    Returns:
    
    a AccessEvaluator
    
    Default:
    
    de.codecamp.vaadin.security.spring.access.SecuredAccess.NotSetAccessEvaluator.class
- - checkLayout
```
boolean checkLayout
```
    Returns whether the parent layout chain should also be checked for access. Naturally, this is only applicable for routes and not endpoints.
    
    Returns:
    
    whether the parent layout chain should also be checked for access (where applicable)
    
    Default:
    
    true