pub fn prove_child_read<B, H, I>(
    backend: B,
    child_info: &ChildInfo,
    keys: I
) -> Result<StorageProof, Box<dyn Error>>
where B: AsTrieBackend<H>, H: Hasher, H::Out: Ord + Codec, I: IntoIterator, I::Item: AsRef<[u8]>,
Expand description

Generate child storage read proof.