MGraph em = initExecutionMetadataContentPart(contentItem);
NonLiteral ep = createExecutionPlan(em, "testChain");
writeExecutionNode(em, ep, "testEngine", true, null);
initExecutionMetadata(em, em, contentItem.getUri(), "testChain", false);
final Serializer serializer = new Serializer();
serializer.bindSerializingProvider(new JenaSerializerProvider());
serializer.bindSerializingProvider(new JsonLdSerializerProvider());
ciWriter = new ContentItemWriter(null) {
protected org.apache.clerezza.rdf.core.serializedform.Serializer getSerializer() {
return serializer;
};