fn sequence_from_observed(
observed: &[ObservedCall],
targets: &TargetedContracts,
depth: ObservedCallDepth,
first_delay: Option<(Option<U256>, Option<U256>)>,
) -> Vec<BasicTxDetails>fn sequence_from_observed(
observed: &[ObservedCall],
targets: &TargetedContracts,
depth: ObservedCallDepth,
first_delay: Option<(Option<U256>, Option<U256>)>,
) -> Vec<BasicTxDetails>