module Rake::DSL

def namespace(name=nil, &block)


task_run = ns[:run] # find :run in the given namespace.
end
task :run
ns = namespace "nested" do

E.g.

tasks defined in the namespace.
block. Returns a NameSpace object that can be used to lookup
Create a new rake namespace and use it for evaluating the given 
def namespace(name=nil, &block)
  name = name.to_s if name.kind_of?(Symbol)
  name = name.to_str if name.respond_to?(:to_str)
  unless name.kind_of?(String) || name.nil?
    raise ArgumentError, "Expected a String or Symbol for a namespace name"
  end
  Rake.application.in_namespace(name, &block)
end