code: protected Document prepareDocumentForSuperColumn(EntityMetadata metadata, Object object, String embeddedColumnName,
          String parentId, Class<?> clazz) {
          Document currentDoc;
          currentDoc = new Document();
  
          // Add entity class and row key info to document
          addEntityClassToDocument(metadata, object, currentDoc, null);
  
          // Add super column name to document
          addSuperColumnNameToDocument(embeddedColumnName, currentDoc);
  
          addParentKeyToDocument(parentId, currentDoc, clazz);
          return currentDoc;
      }
docs: Prepare document.
  
  @param metadata
  the metadata
  @param object
  the object
  @param embeddedColumnName
  the super column name
  @param parentId
  the parent id
  @param clazz
  the clazz
  @return the document