How to get data from Comments like author

In the following script, I tried a method to get the comment author, but it does not work.
What is the right way to get data of a comment?

const fibery = context.getService('fibery');
const threadsDb = 'Threads/Channel'; // 

async function updateEntityDescriptionWithComments(entityId) {
    // Fetch the current entity along with its comments
    const entityWithComments = await fibery.getEntityById(threadsDb, entityId, ['Comments']);
    let content = "";

    // Check if there are any comments to process
    if (entityWithComments.Comments && entityWithComments.Comments.length > 0) {
        // Iterate through each comment to concatenate the author's name and comment text
        for (const comment of entityWithComments.Comments) {
            // Fetch the author's name and comment content
            const authorName = comment['Author.Name'] || "Unknown Author";
            const commentContent = await fibery.getDocumentContent(comment['Document Secret'], 'md');

            // Combine the author name and comment content
            content += `**${authorName}**: ${commentContent}\n\n`;
    } else {
        console.log(`No comments found for entity ${entityId}.`);

    // Fetch the current entity's Description to get its secret for updating
    const entityWithDescription = await fibery.getEntityById(threadsDb, entityId, ['Description']);
    if (entityWithDescription.Description && entityWithDescription.Description.Secret) {
        // Update the Description field with the aggregated comments content
        await fibery.setDocumentContent(entityWithDescription.Description.Secret, content, 'md');
        console.log(`Description for entity ${entityId} updated successfully with comments.`);
    } else {
        console.log(`Description field not found or not accessible for entity ${entityId}.`);

async function processEntityComments() {
    try {
        if (!args.currentEntities || args.currentEntities.length === 0) {
            throw new Error('No current entity found.');

        // Process each current entity 
        for (const currentEntity of args.currentEntities) {
            await updateEntityDescriptionWithComments(;
    } catch (error) {
        console.error(`Error processing comments for the entity: ${error.message}`, error);

await processEntityComments();

I found it:

const commentEntity = await fibery.getEntityById('comments/comment', comment['Id'], ['Author']);
const authorName = commentEntity['Author']['Name'] || "Unknown Author";