Downcasting rust -- error downcasting

downcasting.rs

use std::any::Any;

/// Method that can be use to safely downcast impl Responder to a specific type T
/// It returns a reference of type T
pub fn downcast<T>(responder: &dyn Any) -> Option<&T>
where
    T: Responder + 'static,
{
    responder.downcast_ref::<T>()
}

/// Method that can be use to safely downcast impl Responder to a specific type T
/// It returns a mutable reference of type T
pub fn downcast_mut<T>(responder: &mut dyn Any) -> Option<&mut T>
where
    T: Responder + 'static,
{
    responder.downcast_mut::<T>()
}