Function query_state_inclusive_block 

pub fn query_state_inclusive_block(
    conn: &Connection,
    contract_ca: &ContentAddress,
    key: &Key,
    block_address: &ContentAddress,
) -> Result<Option<Value>, QueryError>

Query the most recent value for a key in a contract’s state that was set at or before the given block address.

This is inclusive of the block’s state (..=block_address).