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pezkuwi-subxt/polkadot/roadmap/implementers-guide/src/runtime-api/candidate-events.md
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Candidate Events

Yields a vector of events concerning candidates that occurred within the given block.

enum CandidateEvent {
	/// This candidate receipt was backed in the most recent block.
	CandidateBacked(CandidateReceipt, HeadData, CoreIndex, GroupIndex),
	/// This candidate receipt was included and became a parablock at the most recent block.
	CandidateIncluded(CandidateReceipt, HeadData, CoreIndex, GroupIndex),
	/// This candidate receipt was not made available in time and timed out.
	CandidateTimedOut(CandidateReceipt, HeadData, CoreIndex),
}

fn candidate_events(at: Block) -> Vec<CandidateEvent>;