Function rustdoc::html::render::get_filtered_impls_for_reference

pub(crate) fn get_filtered_impls_for_reference<'a>(
    shared: &'a Rc<SharedContext<'_>>,
    it: &Item
) -> (Vec<&'a Impl>, Vec<&'a Impl>, Vec<&'a Impl>)

Returns the list of implementations for the primitive reference type, filtering out any implementations that are on concrete or partially generic types, only keeping implementations of the form impl<T> Trait for &T.