code: protected boolean isExist(String rootPackageName, String lastClassName) {
          final Resources[] checkerArray = getExistCheckerArray(rootPackageName);
          for (int i = 0; i < checkerArray.length; ++i) {
              if (checkerArray[i].isExistClass(lastClassName)) {
                  return true;
              }
          }
          return false;
      }
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