docs: void deleteDatabaseFile(String fileName) {
          if (fileName.equalsIgnoreCase(":memory:") || fileName.trim().length() == 0) {
              return;
          }
          CAT.e("deleting the database file: " + fileName);
          try {
              File databaseFile = new File(fileName);
              if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
                  deleteApi16(databaseFile);
              } else {
                  deleteApi14(JobManager.instance().getContext(), databaseFile);
              }
          } catch (Exception e) {
              /* print warning and ignore exception */
              CAT.w(e, "delete failed: " + e.getMessage());
          }
      }