Rename to nameToCategory

Author: jcollins-g

lib/src/model.dart

@@ -4558,14 +4558,14 @@ class Package extends LibraryContainer implements Comparable<Package>, Privacy {
   String _name;
   PackageGraph _packageGraph;
 
-  final Map<String, Category> _categoryToContainer = {};
+  final Map<String, Category> _nameToCategory = {};
   Package(this._name, this._packageGraph);
 
   /// Return true if the code has defined non-default categories for libraries
   /// in this package.
   bool get hasCategories => categories.isNotEmpty;
 
-  LibraryContainer get defaultCategory => categoryToContainer[null];
+  LibraryContainer get defaultCategory => nameToCategory[null];
 
   bool _isPublic;
   @override
@@ -4585,24 +4585,24 @@ class Package extends LibraryContainer implements Comparable<Package>, Privacy {
   @override
   List<Library> get publicLibraries => super.publicLibraries;
 
-  // A map of category name to the category itself.
-  Map<String, Category> get categoryToContainer {
-    if (_categoryToContainer.isEmpty) {
-      _categoryToContainer[null] = new Category(null, this, dartdocOptions);
+  /// A map of category name to the category itself.
+  Map<String, Category> get nameToCategory {
+    if (_nameToCategory.isEmpty) {
+      _nameToCategory[null] = new Category(null, this, dartdocOptions);
       for (Library lib in libraries) {
         String category = lib.category;
-        _categoryToContainer.putIfAbsent(
+        _nameToCategory.putIfAbsent(
             category, () => new Category(category, this, dartdocOptions));
-        _categoryToContainer[category]._libraries.add(lib);
+        _nameToCategory[category]._libraries.add(lib);
       }
     }
-    return _categoryToContainer;
+    return _nameToCategory;
   }
 
   List<LibraryContainer> _categories;
   List<LibraryContainer> get categories {
     if (_categories == null) {
-      _categories = categoryToContainer.values
+      _categories = nameToCategory.values
           .where((c) => c.name != null)
           .toList()
         ..sort();