RequiredModifiers (error-prone annotations 2.16 API)

```
@Documented
@Retention(CLASS)
@Target(ANNOTATION_TYPE)
public @interface RequiredModifiers
```
Annotation declaring that the target annotation requires all the specified modifiers. For example, an annotation declared as:
```
 @RequiredModifiers(modifier = Modifier.PUBLIC)
 @interface MyAnnotation {}
 
```
will be considered illegal when used on non-public elements such as:
```
 @MyAnnotation void foo() {}
 
```
Author:

[email protected] (Jige Yu)

- Optional Element Summary
  
  Optional Elements
  Modifier and Type Optional Element Description
  
  Modifier[] modifier
  The required modifiers.
  
  Modifier[] value
  Deprecated.
  use modifier() instead

- Element Detail
  - value
```
@Deprecated
Modifier[] value
```
    Deprecated.
    use modifier() instead
    
    Default:
    
    {}
- - modifier
```
Modifier[] modifier
```
    The required modifiers. The annotated element is illegal if any one or more of these modifiers are absent.
    Empty array has the same effect as not applying this annotation at all; duplicates are allowed but have no effect.
    
    Default:
    
    {}