code: @SuppressWarnings({"unchecked", "rawtypes"})
      @Override
      public C merge(final C other) {
          return (C) ConfigurationUtils.defaultMerge((ConfigurationComponent) this, (ConfigurationComponent) other);
      }
docs: Performs a default merge operation between current bean instance and defaults instance
  
  @param other The configuration to merge with.
  @return the merged configuration