IssueTracker

The UnknownNullness lint check only looks at nullness annotations on the item being inspected, which means that the following definitions using a type-use @Nullable trigger the check:

public int @Nullable [] foo() { return null; }

public java.lang.@Nullable String foo() { return null; }

Since the annotations here are applied directly to the type of the item, they have effectively the same meaning as annotating the item itself with a non-type-use @Nullable.

The check should also look at the annotations present on the PsiType and not report a lint violation if there is a nullness annotation.

I see that the issue is being reported here. I can contribute a fix if someone from the lint team will review it.