Function sp_state_machine::prove_range_read_with_size

pub fn prove_range_read_with_size<B, H>(
    backend: B, 
    child_info: Option<&ChildInfo>, 
    prefix: Option<&[u8]>, 
    size_limit: usize, 
    start_at: Option<&[u8]>
) -> Result<(StorageProof, u32), Box<dyn Error>> where
    B: Backend<H>,
    H: Hasher,
    H::Out: Ord + Codec, 

Generate range storage read proof.