usage

# File lib/bundler/vendor/thor/lib/thor/parser/option.rb, line 82
    def usage(padding = 0)
      sample = if banner && !banner.to_s.empty?
        "#{switch_name}=#{banner}".dup
      else
        switch_name
      end

      sample = "[#{sample}]".dup unless required?

      if boolean?
        sample << ", [#{dasherize('no-' + human_name)}]" unless (name == "force") || name.start_with?("no-")
      end

      if aliases.empty?
        (" " * padding) << sample
      else
        "#{aliases.join(', ')}, #{sample}"
      end
    end