private ContentCluster getMultiNodeCluster() throws Exception {
        String groupXml = joinLines("  <group>",
                          "    <node distribution-key='5' hostalias='mockhost'/>",
                          "    <node distribution-key='3' hostalias='mockhost'/>",
                          "    <node distribution-key='7' hostalias='mockhost'/>",
                          "  </group>", "");
        return createCluster(createClusterXml(groupXml, 1, 1));
    }
Unit tests for the naming of search nodes base dir and config ids in an indexed content cluster.

@author geirst
config-model/src/test/java/com/yahoo/vespa/model/content/IndexedSchemaNodeNamingTest.java