{"ast_node_type":"other","tokens":[{"end":93,"kind":"keyword","start":0,"text":"impl<Prov:"}]}
impl<Prov: Provenance, Extra, E: Encoder> Encodable<E> for Allocation<Prov, Extra, Box<[u8]>>
/// Custom encoder for [`Allocation`] to more efficiently represent the case where all bytes are 0.
where