effectiveDartM property

Map<String, String> effectiveDartM
getter/setter pair

What is to correct in dawo by: https://www.dartlang.org/guides/language/effective-dart#documentation

Implementation

Map<String, String> effectiveDartM = {
  'async-await ': 'PREFER async/await over using raw futures. ',
  'collections': 'DO use collection literals when possible. No constructor.',
  'completer': 'AVOID using Completer directly. ',
  'constructors': 'DO use initializing formals when possible.',
  'declaration': 'DO initialize fields at their declaration when possible. ',
  'error': 'AVOID catches without on clauses. ',
  'functions': 'DON’T create a lambda when a tear-off will do. ',
  'final': 'PREFER using a final field to make a read-only property. ',
  'isEmpty': 'DON’T use .length to see if a collection is empty. ',
  'libraryPrivate': 'PREFER making declarations private. ',
  'rethrow': 'DO use rethrow to rethrow a caught exception.? ',
  'strings': 'DO use adjacent strings to concatenate string literals. ',
  'this': 'DON’T use this. when not needed to avoid shadowing. ',
  'variable': 'AVOID storing what you can calculate. ',
};