public MutableEntityStorage getActualStorageBuilder() {
    if (diff != null) return diff;
    VersionedEntityStorage storage = ((WorkspaceModelInternal)WorkspaceModel.getInstance(myProject)).getEntityStorage();
    LOG.info("Ide modifiable models provider, create builder from version " + storage.getVersion());
    var initialStorage = (ImmutableEntityStorage)storage.getCurrent();
    return diff = MutableEntityStorage.from(initialStorage);
  }
public MutableEntityStorage getActualStorageBuilder()