wro4j-maven-plugin/src/main/java/ro/isdc/wro/maven/plugin/support/AggregatedFolderPathResolver.java
private String[] getContextFolders() {
    final StandaloneContext context = new StandaloneContext();
    context.setContextFoldersAsCSV(contextFoldersAsCSV);
    return context.getContextFolders();
  }
private String[] getContextFolders() {
    final StandaloneContext context = new StandaloneContext();
    context.setContextFoldersAsCSV(contextFoldersAsCSV);
    return context.getContextFolders();
  }
Use {@link StandaloneContext} to tokenize the contextFoldersAsCSV value.