trait LitConvertible {
type V: Eq;
// Required method
fn lc_convert(&self, cmp_loc: &(Span, &'_ str)) -> Result<Self::V>;
}trait LitConvertible {
type V: Eq;
// Required method
fn lc_convert(&self, cmp_loc: &(Span, &'_ str)) -> Result<Self::V>;
}