Method add

crates/vm/src/builtins/set.rs:325–327

(&self, item: PyObjectRef, vm: &VirtualMachine)

    }

    fn add(&self, item: PyObjectRef, vm: &VirtualMachine) -> PyResult<()> {
        self.content.insert(vm, &*item, ())
    }

    fn remove(&self, item: PyObjectRef, vm: &VirtualMachine) -> PyResult<()> {
        self.retry_op_with_frozenset(&item, vm, |item, vm| self.content.delete(vm, item))