# File lib/rake.rb, line 1568
1568:     def in_namespace(name)
1569:       name ||= generate_name
1570:       @scope.push(name)
1571:       ns = NameSpace.new(self, @scope)
1572:       yield(ns)
1573:       ns
1574:     ensure
1575:       @scope.pop
1576:     end