private bool CompareField(FieldExpression a, FieldExpression b)
{
return(a.FieldName == b.FieldName &&
a.Serializer.GetType() == b.Serializer.GetType() &&
Compare(a.Original, b.Original));
}
protected internal virtual Expression VisitField(FieldExpression node)
{
return(node.Update(
Visit(node.Document),
node.Original));
}