NegativeIndexFor (checker-framework 3.39.0-eisop1 API)

```
@Documented
@Retention(RUNTIME)
@Target({TYPE_USE,TYPE_PARAMETER})
@SubtypeOf(SearchIndexFor.class)
public @interface NegativeIndexFor
```
The annotated expression is between -1 and -a.length - 1, inclusive, for each sequence a listed in the annotation.
This type should rarely (if ever) be written by programmers. It is inferred by the SearchIndexChecker when the result of a call to one of the JDK's binary search methods (like Arrays.binarySearch) is known to be less than zero. For example, consider the following code:
```
     int index = Arrays.binarySearch(array, target);
     if (index < 0) {
          // index's type here is @NegativeIndexFor("array")
          index = index * -1;
          // now index's type is @IndexFor("array")
     }
 
```
See the Checker Framework Manual:
Index Checker

Required Element Summary

Required Elements
Modifier and Type	Required Element	Description
`java.lang.String[]`	`value`	Sequences for which this value is a "negative index"; that is, the expression is in the range `-1` to `-a.length - 1`, inclusive, for each sequence `a` given here.

- Element Detail
  - value
```
@JavaExpression
java.lang.String[] value
```
    Sequences for which this value is a "negative index"; that is, the expression is in the range -1 to -a.length - 1, inclusive, for each sequence a given here.