class RuboCop::OptionsValidator

def disable_parallel_when_invalid_option_combo
  return unless @options.key?(:parallel)
  invalid_flags = invalid_arguments_for_parallel
  return if invalid_flags.empty?
  @options.delete(:parallel)
  puts '-P/--parallel is being ignored because ' \
       "it is not compatible with #{invalid_flags.join(', ')}."
end