code: public static List<ColumnFamilyDescriptor> buildColumnFamilyDescriptors(
              ColumnFamilyOptions cfOptions, String... cfNames) {
          List<ColumnFamilyDescriptor> result = new ArrayList<>();
          if (cfNames != null) {
              for (String cfName : cfNames) {
                  result.add(buildColumnFamilyDescriptor(cfOptions, cfName));
              }
          }
          return result;
      }
docs: Builds a list of {@link ColumnFamilyDescriptor}s, specifying options.
  
  @param cfOptions
  @param cfNames
  @return