code: public synchronized void abortEdit() throws IOException {
          if (!mIsUnderEdit) {
              return;
          }
          mIsUnderEdit = false;
          FileUtils.deleteIfExists(getTempFile());
          mDiskCache.abortEdit(this);
      }
docs: /*
  Aborts this edit. This releases the edit lock so another edit may be
  started on the same mKey.