code: public synchronized void addDefaultExcludes() {
          int excludesLength = excludes == null ? 0 : excludes.length;
          String[] newExcludes;
          newExcludes = new String[excludesLength + defaultExcludes.size()];
          if (excludesLength > 0) {
              System.arraycopy(excludes, 0, newExcludes, 0, excludesLength);
          }
          String[] defaultExcludesTemp = getDefaultExcludes();
          for (int i = 0; i < defaultExcludesTemp.length; i++) {
              newExcludes[i + excludesLength] =
                  defaultExcludesTemp[i].replace('/', File.separatorChar)
                  .replace('\\', File.separatorChar);
          }
          excludes = newExcludes;
      }
docs: Add default exclusions to the current exclusions set.