pub trait TermExtSolvable {
// Required methods
fn is_solvable(&self) -> Option<&Id>;
fn has_solvable(&self) -> bool;
fn solvables(&self) -> SmallVec<&Variable, 2>;
}pub trait TermExtSolvable {
// Required methods
fn is_solvable(&self) -> Option<&Id>;
fn has_solvable(&self) -> bool;
fn solvables(&self) -> SmallVec<&Variable, 2>;
}