Function validate_withdrawals_presence 

pub fn validate_withdrawals_presence(
    chain_spec: impl OpHardforks,
    version: EngineApiMessageVersion,
    message_validation_kind: MessageValidationKind,
    timestamp: u64,
    has_withdrawals: bool,
) -> Result<(), EngineObjectValidationError>

Available on crate features node-api and node only.

Validates the presence of the withdrawals field according to the payload timestamp.

After Canyon, withdrawals field must be Some. Before Canyon, withdrawals field must be None;

Canyon activates the Shanghai EIPs, see the Canyon specs for more details: https://github.com/ethereum-optimism/optimism/blob/ab926c5fd1e55b5c864341c44842d6d1ca679d99/specs/superchain-upgrades.md#canyon