org.apache.curator.x.async.modeled.details.ModeledFrameworkImpl.delete(int) is not using version parameter

org.apache.curator.x.async.modeled.details.ModeledFrameworkImpl.delete(int) is defined as:
public AsyncStage<Void> delete(int version)

{ return dslClient.delete().withVersion(-1).forPath(modelSpec.path().fullPath()); }

Shouldn't the -1 be "version"?