output: #fixed code
                                  @Override
      public final void clearCache() {
          this.cache.clear();
      }
input: #vulnerable code 
                                  @Override
      public final void clearCache() {
          synchronized (this.cache) {
              this.cache.clear();
          }
      } 
                              #location 3 
                              #vulnerability type THREAD_SAFETY_VIOLATION