private ExpressionInfo Expr_BinaryOp_BooleanOperator(XmlNode node)
{
var left = node.GetSubNode(AstConstants.Subnode + ":" + AstConstants.Subnodes.Left);
var right = node.GetSubNode(AstConstants.Subnode + ":" + AstConstants.Subnodes.Right);
Analyze(left);
Analyze(right);
return new ExpressionInfo();
}