pub fn num_inputs(&self) -> usize {
        let mut count = 0;

        self.visit_children(|_| count += 1);

        count
    }
/// The number of child relations this relation has.
The number of child relations this relation has.
The number of child relations this relation has .
pub fn num_inputs(&self) -> usize {
        let mut count = 0;
        self.visit_children(|_| count += 1);
        count
    }
pub fn num_inputs ( & self ) -> usize { let mut count = 0 ; self . visit_children ( | _ | count += 1 ) ; count }
The number of child relations this relation has.
The number of child relations this relation has .
&self
&self