How to create GSuite user by ruby api (always confusing this due to a lack of docs..)

create_g_suite_account.rb

  def create_g_suite_email
    return if Rails.env.test? || Rails.env.development? # skip if it's test
    g_email = "#{self.first_name}.#{self.last_name}@xxxx.com".downcase
    user_object = Google::Apis::AdminDirectoryV1::User.new
    user_object.primary_email = g_email
    user_object.name = Google::Apis::AdminDirectoryV1::UserName.new
    user_object.name.given_name = self.first_name
    user_object.name.family_name = self.last_name    
    user_object.password = 'xxxxxxxxxxxx'
    response = admin_directory.insert_user(user_object)
  end
  handle_asynchronously :create_g_suite_email, queue: "google_admin_directory"

  private

    def authorize
      require 'googleauth'
      require 'googleauth/stores/file_token_store'
      client_id = Google::Auth::ClientId.from_file(Rails.application.secrets.secret_file_g_suite_admin)
      token_store = Google::Auth::Stores::FileTokenStore.new(file: Rails.application.secrets.credential_file_g_suite_admin)
      authorizer = Google::Auth::UserAuthorizer.new(client_id, Google::Apis::AdminDirectoryV1::AUTH_ADMIN_DIRECTORY_USER, token_store)
      user_id = 'default'
      authorizer.get_credentials(user_id)
    end

    def initialize_admin_directory
      service = Google::Apis::AdminDirectoryV1::DirectoryService.new
      service.client_options.application_name = "My App"
      service.authorization = credentials
      service
    end

    def credentials
      @credentials ||= authorize
    end

    def admin_directory
      @admin_directory ||= initialize_admin_directory
    end     

It's in user model.

googleapis/google-api-ruby-client#360