class Thor::CoreExt::HashWithIndifferentAccess

def method_missing(method, *args)


options.test_framework?(:rspec) # => options[:test_framework] == :rspec
options.shebang # => "/usr/lib/local/ruby"
options.force? # => !!options['force']

Magic predicates. For instance: 
def method_missing(method, *args)
  method = method.to_s
  if method =~ /^(\w+)\?$/
    if args.empty?
      !!self[$1]
    else
      self[$1] == args.first
    end
  else
    self[method]
  end
end