Google Workspace Addon: Do I need a workspace admin account to test AdminDirectorySDK feature?

Question

I am currently trying to make a google workspace Add-on. The Addon will have a feature to browse a list of users using AdminDirectorySDK.

let page = AdminDirectory.Users?.list({
    query: query,
    domain: "gmail.com", //what domain to use for testing?
    maxResults: 100,
    projection: "full",
    viewType: "domain_public",
  });

I want to query users by domain. Do I need a google admin account to use this feature? From what I understand, you need a domain tied to good workspace account to be able to query users.

Can I somehow test this feature using a basic gmail account? I mean I don't currently own such google account so was hoping if I could avoid setting up a domain just to test this use case.

Also query = 'myemail@gmail.com'