MapRootIndex     2140 src/heap.cc      {type, size, k##camel_name##MapRootIndex},
MapRootIndex     2156 src/heap.cc      { NAME##_TYPE, Name::kSize, k##Name##MapRootIndex },
MapRootIndex     1136 src/heap.h           return Map::cast(roots_[k##Name##MapRootIndex]);                         \