Method payload_if_subclass

crates/vm/src/object/core.rs:1477–1484

(&self, vm: &VirtualMachine)

    #[deprecated(note = "use downcast_ref instead")]
    #[inline(always)]
    pub fn payload_if_subclass<T: crate::PyPayload>(&self, vm: &VirtualMachine) -> Option<&T> {
        if self.class().fast_issubclass(T::class(&vm.ctx)) {
            #[allow(deprecated)]
            self.payload()
        } else {
            None
        }
    }

    #[inline]
    pub(crate) fn typeid(&self) -> TypeId {