Review

class RenamePrototypes {
  /**
   * Runs through the list of properties and tries to rename as many as possible
   * with names that were used for them in the previous compilation.
   * {@code reservedNames} is updated with the set of reused names.
   * @param properties The set of properties to attempt to rename.
   */
  private void reusePrototypeNames(Set<Property> properties) {
    for (Property prop : properties) {
      String prevName = prevUsedRenameMap.lookupNewName(prop.oldName);
      if (prevName != null) {
        if (reservedNames.contains(prevName)) {
          continue;
        }

        prop.newName = prevName;
        reservedNames.add(prevName);
      }
    }
  }

}