private static Expression ReplaceLambda(Expression e, LambdaExpression what, LambdaExpression with)
{
var r = new LambdaReplacer(what, with);
var newE = r.Visit(e);
return(newE);
}
public static Expression <Func <T, T1> > Replace <T, T1, T3>(this Expression <Func <T, T1> > e, Expression <Func <T, T3> > what, LambdaExpression with)
{
var r = new LambdaReplacer(what, with);
var newE = r.Visit(e);
return((Expression <Func <T, T1> >)newE);
}