## String#methodize

    require 'facets/string/methodize'

module name

    a = "FooBase"
    r = "foo_base"
    a.methodize.assert == r

path name

    a = "foo/base"
    r = "foo__base"
    a.methodize.assert == r

name space

    a = "Foo::Base"
    r = "foo__base"
    a.methodize.assert == r