class Thor::Option

def usage(padding=0)
  sample = if banner && !banner.to_s.empty?
    "#{switch_name}=#{banner}"
  else
    switch_name
  end
  sample = "[#{sample}]" unless required?
  if aliases.empty?
    (" " * padding) << sample
  else
    "#{aliases.join(', ')}, #{sample}"
  end
end