address PR comments

dot/parachain/candidate-validation/candidate_validation.go

@@ -87,7 +87,6 @@ func (cv *CandidateValidation) processMessage(msg any) {
 		}
 
 		result, err := cv.pvfHost.validate(validationTask)
-
 		if err != nil {
 			logger.Errorf("failed to validate from exhaustive: %w", err)
 			msg.Ch <- parachaintypes.OverseerFuncRes[ValidationResult]{

dot/parachain/candidate-validation/worker.go

@@ -20,7 +20,6 @@ type workerTask struct {
 
 func newWorker(validationCode parachaintypes.ValidationCode) (*worker, error) {
 	parachainRuntime, err := parachainruntime.SetupVM(validationCode)
-
 	if err != nil {
 		return nil, err
 	}

dot/parachain/candidate-validation/worker_pool.go

@@ -139,7 +139,7 @@ func (v *workerPool) executeRequest(msg *ValidationTask) (*ValidationResult, err
 			return nil, err
 		}
 	}
-	syncWorker := v.workers[validationCodeHash]
+	worker := v.workers[validationCodeHash]
 
 	logger.Debugf("sending request", validationCodeHash)
 
@@ -154,7 +154,7 @@ func (v *workerPool) executeRequest(msg *ValidationTask) (*ValidationResult, err
 		maxPoVSize:       msg.PersistedValidationData.MaxPovSize,
 		candidateReceipt: msg.CandidateReceipt,
 	}
-	return syncWorker.executeRequest(workTask)
+	return worker.executeRequest(workTask)
 
 }
 

dot/parachain/runtime/instance.go

@@ -91,6 +91,7 @@ func (in *Instance) ValidateBlock(params ValidationParameters) (
 
 // ValidatorInstance for candidate validation methods
 type ValidatorInstance interface {
+	// ValidateBlock validates a block by calling parachain runtime's validate_block call and returns the result.
 	ValidateBlock(params ValidationParameters) (*ValidationResult, error)
 }