def get_account_item(address, param)
      address = Utils.normalize_address address, allow_blank: true
      return @caches[param][address] if @caches[param].has_key?(address)

      account = get_account address
      v = account.send param
      @caches[param][address] = v
      v
    end
def get_account_item(address, param)
      address = Utils.normalize_address address, allow_blank: true
      return @caches[param][address] if @caches[param].has_key?(address)

      account = get_account address
      v = account.send param
      @caches[param][address] = v
      v
    end
Get a specific parameter of a specific account.

 @param address [String] the address of the account (binary or hex string)
 @param param [Symbol] the requested parameter (`:nonce`, `:balance`,
   `:storage` or `:code`)

 @return [Object] the value