Function pallet_housing_fund::storage::hashed::get   
pub fn get<T, HashFn, R>(hash: &HashFn, key: &[u8]) -> Option<T>where
    T: Decode,
    HashFn: Fn(&[u8]) -> R,
    R: AsRef<[u8]>,Expand description
Return the value of the item in storage under key, or None if there is no explicit entry.