wro4j-core/src/main/java/ro/isdc/wro/model/resource/support/AbstractConfigurableMultipleStrategy.java
public static String createItemsAsString(final String... items) {
    final StringBuffer sb = new StringBuffer();
    for (int i = 0; i < items.length; i++) {
      sb.append(items[i]);
      if (i < items.length - 1) {
        sb.append(TOKEN_DELIMITER);
      }
    }
    return sb.toString();
  }
public static String createItemsAsString(final String... items) {
    final StringBuffer sb = new StringBuffer();
    for (int i = 0; i < items.length; i++) {
      sb.append(items[i]);
      if (i < items.length - 1) {
        sb.append(TOKEN_DELIMITER);
      }
    }
    return sb.toString();
  }
Creates a comma separated list of items.

@VisibleForTesting