class Samovar::Nested

def to_a
	usage = [self.to_s]
	
	if @commands.size == 0
		usage << "No commands available."
	elsif @commands.size == 1
		usage << "Only #{@commands.first}."
	else
		usage << "One of: #{@commands.keys.join(', ')}."
	end
	
	if @default
		usage << "(default: #{@default})"
	elsif @required
		usage << "(required)"
	end
	
	return usage
end