code: public static String[] randomResourceNames(String prefix, int maxLen, int count) {
          String[] names = new String[count];
          ResourceNamer resourceNamer = SdkContext.getResourceNamerFactory().createResourceNamer("");
          for (int i = 0; i < count; i++) {
              names[i] = resourceNamer.randomName(prefix, maxLen);
          }
          return names;
      }
docs: Generates the specified number of random resource names with the same prefix.
  @param prefix the prefix to be used if possible
  @param maxLen the maximum length for the random generated name
  @param count the number of names to generate
  @return random names