anchor.diff:      }
   
       // But only setters whose getter is missing a doc.
  -    for (FunctionDeclaration setter in setters.values) {
  +    for (FunctionDeclaration setter in setters) {
         FunctionDeclaration getter = getters[setter.name.name];
         if (getter != null && missingDocs.contains(getter)) {
           check(setter);
  
positive.code:     }
  
      // But only setters whose getter is missing a doc.
      for (MethodDeclaration setter in setters.values) {
        MethodDeclaration getter = getters[setter.name.name];
        if (getter == null) {
          // Look for an inherited getter.
  
negative.code:         if (member.isGetter) {
            getters[member.name.name] = member;
          } else if (member.isSetter) {
            setters.add(member);
          } else {
            methods.add(member);
          }
  