A comment below an `@extends` tag invalidates requires

```
/**
 * @interface
 * @extends {goog.Foo}
 * I am a comment
 */
```
`goog.Foo` should be required, but it is not.

Likewise:
```
/**
 * @interface
 * @extends {goog.Foo}
 * @extends {goog.Foo2}
 * I am a comment
 * @extends {goog.Foo3}
 * @extends {goog.Foo4}
 */
```
Here `goog.Foo` is required, but none of the others are.