pub fn get_value_impl(
data: &HashMap<String, ConstItem, BuildHasherDefault<FnvHasher>>,
list_def: &ListDefObj,
id: &str,
root_def: *const RootDefObj,
) -> Option<CItemPtr>pub fn get_value_impl(
data: &HashMap<String, ConstItem, BuildHasherDefault<FnvHasher>>,
list_def: &ListDefObj,
id: &str,
root_def: *const RootDefObj,
) -> Option<CItemPtr>