[ruby-talk:03233] Making a class method private

I have code like this:

#!/opt/ruby/bin/ruby

# ruby 1.4.3 (1999-12-08) [hppa1.1-hpux10.20]
# HP-UX whatever! B.10.20 A 9000/861 --- two-user license

class Foo
   def Foo.one
      [ "one", "two", "three" ]
   end

   private Foo.one

   def Foo.two
      Foo.one.each { |el|
         print "howdy, ", el, "!\n"
         }
   end
end

It returns:

./test:11:in `private': failed to convert Array into Integer (TypeError)
        from ./test:11

If I change the "private" line to be:

private :Foo.one

I get

./test:11: undefined method `one' for 8405:Fixnum (NameError)

If I change it to be one of the following:

private :(Foo.one)

private Foo.:one

I get parse errors.