# File lib/chef/provider/group/groupadd.rb, line 34
        def define_resource_requirements
          super
          required_binaries.each do |required_binary|
            requirements.assert(:all_actions) do |a| 
              a.assertion { ::File.exists?(required_binary) } 
              a.failure_message Chef::Exceptions::Group, "Could not find binary #{required_binary} for #{@new_resource}" 
              # No whyrun alternative: this component should be available in the base install of any given system that uses it
            end
          end
        end