    # File lib/chef/file_access_control.rb, line 71
        def target_uid
          return nil if resource.owner.nil?
          if resource.owner.kind_of?(String)
            diminished_radix_complement( Etc.getpwnam(resource.owner).uid )
          elsif resource.owner.kind_of?(Integer)
            resource.owner
          else
            Chef::Log.error("The `owner` parameter of the #@resource resource is set to an invalid value (#{resource.owner.inspect})")
            raise ArgumentError, "cannot resolve #{resource.owner.inspect} to uid, owner must be a string or integer"
          end
        rescue ArgumentError
          raise Chef::Exceptions::UserIDNotFound, "cannot determine user id for '#{resource.owner}', does the user exist on this system?"
        end