Outputs and their branches are:

<% outputGraph.children*.values*.each { o -> %>
• <%=o.outputFile%> <%}%>

Here are all the XML files:

<% outputGraph.findAllOutputsBy { it.outputFile.name.endsWith(".xml") && it.branchPath.split("/").contains("bar") }.each { o -> %>
• <%=o.outputFile%> <%}%>