need docs for client.projects.duplicateProject() call

Hi, I am looking for documentation on node-asana libraries. In particular I am looking for information about client.projects.duplicateProject() call, and can’t find any info.

Here is the code snippet I am using:
client.projects.duplicateProject(project_gid, {data: {name: “My New Project”}}).then(project => {
console.log("duplicated project: ", JSON.stringify(project, null, 2));
}).catch(function(err) {
console.log('Error duplicating technical project: ’ + err);

The error is “Invalid Request” – the response doesn’t contain any further detail about the error.

I’d appreciate if you send me a link to your official documentation for asana node library.

thank you