| The presence of an unused method may indicate a bug. This check highlights |
| _private_ methods which are unused and can be safely removed without considering |
| the impact on other source files. |
| |
| ## Suppression |
| |
| Methods and fields which are used by reflection can be annotated with `@Keep` to |
| suppress the warning. |
| |
| This annotation can also be applied to annotations, to suppress the warning for |
| any member annotated with that annotation: |
| |
| ```java |
| import com.google.errorprone.annotations.Keep; |
| |
| @Keep |
| @Retention(RetentionPolicy.RUNTIME) |
| @interface Field {} |
| |
| ... |
| |
| public class Data { |
| @Field private int a; // no warning. |
| ... |
| } |
| ``` |
| |
| All false positives can be suppressed by annotating the method with |
| `@SuppressWarnings("unused")` or prefixing its name with `unused`. |
