You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: index.rb
    path of file: ./repos/openproject/spec/support/pages/admin/placeholder_users
    
    the code of the file until where you have to start completion: #-- copyright
# OpenProject is
    
        def expect_non_listed
          expect(page)
            .to have_no_css('tr.placeholder-user')

          expect(page)
            .to have_css('tr.generic-table--empty-row', text: 'There is currently nothing to display.')
        end