Reports any non-final field in a class with @Immutable annotation.
This violates the contract of the @Immutable annotation.
Supported @GuardedBy annotations are:
- net.jcip.annotations.GuardedBy
- javax.annotation.concurrent.GuardedBy
- org.apache.http.annotation.GuardedBy
- com.android.annotations.concurrency.GuardedBy
- androidx.annotation.GuardedBy
- com.google.errorprone.annotations.concurrent.GuardedBy