private static ContentCluster createClusterWithTwoDocumentType() throws Exception {
        return createCluster(new ContentClusterBuilder().docTypes("foo", "bar").getXml(),
                             createSchemas("foo", "bar"));
    }
Unit tests for content search cluster.

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