anchor.diff:      ],
       steps: const<RecipeStep>[
         const RecipeStep(description: 'Put in oven'),
  -      const RecipeStep(duration: '45 min', description: 'Cook')
  -    ]
  +      const RecipeStep(duration: '45 min', description: 'Cook'),
  +    ],
     ),
     const Recipe(
       name: 'Rustic purple mash',
  
positive.code:     ],
      steps: const<RecipeStep>[
        const RecipeStep(duration: '3 min', description: 'Stir'),
        const RecipeStep(duration: '45 min', description: 'Cook')
      ]
    ),
    const Recipe(
      name: 'Coconut rice',
  
negative.code:           recipe: recipe,
            onTap: () { showRecipePage(context, recipe); }
          );
        }),
      );
    }
  
    void showFavoritesPage(BuildContext context) {
      Navigator.push(context, new MaterialPageRoute<Null>(
        settings: const RouteSettings(name: "/pesto/favorites"),
        builder: (BuildContext context) => new PestoFavorites(),
      ));
    }
  
  