# File lib/rake.rb, line 1848
1848:     def in_namespace(name)
1849:       name ||= generate_name
1850:       @scope.push(name)
1851:       ns = NameSpace.new(self, @scope)
1852:       yield(ns)
1853:       ns
1854:     ensure
1855:       @scope.pop
1856:     end