Priority rules not detected in the simplification

[maveme]

The following productions are not recognized in the simplification because they do not have .symbols, instead they have .choices

`

not: "!" Expr
left (
mul: Expr "*" Expr
| div: Expr "/" Expr
)
left (
add: Expr "+" Expr
| sub: Expr "-" Expr
)
non-assoc (
lt: Expr "<" Expr
| leq: Expr "<=" Expr
| gt: Expr ">" Expr
| geq: Expr ">=" Expr
| eq: Expr "==" Expr
| neq: Expr "!=" Expr
)
left and: Expr "&&" Expr
left or: Expr "||" Expr`

The code that fails is this:
Module: kogi::simplification::RemoveUnitProduction

Production filterAlternative(Production p) {
p.symbols = filterLayoutSymbols(p.symbols);
return p;
} `