@Override
public ValueBounds updateTypeBounds(Map<Expression, ValueBounds> typeMap) {
ValueBounds fromType = childAt(0).updateTypeBounds(typeMap);
ValueBounds toType = childAt(1).updateTypeBounds(typeMap);
valueBounds = ValueBounds.vector(fromType.getTypeSet() | toType.getTypeSet());
return valueBounds;
}
@Override
public Type getType() {
return valueBounds.storageType();
}