| Possible fixes: | |
| * If the field is never reassigned, add the missing `final` modifier. | |
| * If the field needs to be mutable, create a separate lock by adding a private | |
| final field and synchronizing on it to guard all accesses. | |
| * If the field is lazily initialized, annotation it with | |
| `com.google.errorprone.annotations.concurrent.LazyInit`. |