class Shoulda::Matchers::ActiveRecord::DefineEnumForMatcher

def presented_enum_mapping(enum_values) 

def presented_enum_mapping(enum_values)
  enum_values.
    map { |output_to_input|
      output_to_input.
        map(&Shoulda::Matchers::Util.method(:inspect_value)).
        join(' to ')
    }.
    to_sentence
end