How to use the forge-apis.CreateStorageDataAttributes function in forge-apis

function createBodyOfPostStorage(folderId, fileName) {
    // create a new storage for the ouput item version
    let createStorage = new CreateStorage();
    let storageRelationshipsTargetData = new StorageRelationshipsTargetData("folders", folderId);
    let storageRelationshipsTarget = new StorageRelationshipsTarget;
    let createStorageDataRelationships = new CreateStorageDataRelationships();
    let createStorageData = new CreateStorageData();
    let createStorageDataAttributes = new CreateStorageDataAttributes();

    createStorageDataAttributes.name = fileName;
    storageRelationshipsTarget.data = storageRelationshipsTargetData;
    createStorageDataRelationships.target = storageRelationshipsTarget;
    createStorageData.relationships = createStorageDataRelationships;
    createStorageData.type = 'objects';
    createStorageData.attributes = createStorageDataAttributes;
    createStorage.data = createStorageData;
    
    return createStorage;
}

let createItemRelationshipsStorage = new CreateItemRelationshipsStorage();
    let createItemRelationshipsStorageData = new CreateItemRelationshipsStorageData();
    createItemRelationshipsStorageData.type = "objects";
    createItemRelationshipsStorageData.id = storageId;
    createItemRelationshipsStorage.data = createItemRelationshipsStorageData;

    let createVersionDataRelationships = new CreateVersionDataRelationships();
    createVersionDataRelationships.item = createVersionDataRelationshipsItem;
    createVersionDataRelationships.storage = createItemRelationshipsStorage;

    let baseAttributesExtensionObject = new BaseAttributesExtensionObject();
    baseAttributesExtensionObject.type = versionType;
    baseAttributesExtensionObject.version = "1.0";

    let createStorageDataAttributes = new CreateStorageDataAttributes();
    createStorageDataAttributes.name = fileName;
    createStorageDataAttributes.extension = baseAttributesExtensionObject;

    let createVersionData = new CreateVersionData();
    createVersionData.type = "versions";
    createVersionData.attributes = createStorageDataAttributes;
    createVersionData.relationships = createVersionDataRelationships;

    let createVersion = new CreateVersion();
    createVersion.data = createVersionData;

    return createVersion;
}