Unable to get current thread content within BUI extension

Summary: I am trying to retrieve the current thread content(uncommitted) within BUI extension using the code snippet in the documentation. However, it doesn't seem to be working.

Content (required): BUI Workspace Extension

Version (include the version you are using, if applicable): 21B

Code Snippet (add any code snippets that support your topic, if applicable):

ORACLE_SERVICE_CLOUD.extension_loader.load("IncidentThread" , "1")

.then(function(extensionProvider)

{

console.log('Before threadEntry Extension');

extensionProvider.registerWorkspaceExtension(function(incidentWorkspaceRecord)

{

console.log('Before threadEntry Extension 2');

incidentWorkspaceRecord.getCurrentEditedThread('Response',true).then(function(threadEntry)

{

var threadContent = threadEntry.getContent();

console.log('Thread content' + threadContent);

},

function(rejectJson) {

console.log('Failed to get thread content');