adding back commented code and adding TODO item

Author: pablolagreca

pkg/types/chains/evm/evm.go

@@ -143,6 +143,7 @@ func (e *TxError) Error() string {
 	return fmt.Sprintf("Fail processing Transaction with internal TxID: %s", e.TxID)
 }
 
+//PLEX-1524 - Refactor this to return the Tx Hash in a Transaction type and a second return value for the TxStatus. We may even be able to return the whole transaction object instead of just the hash.
 type TransactionResult struct {
 	TxStatus TransactionStatus
 	TxHash   Hash

pkg/types/relayer.go

@@ -101,6 +101,12 @@ type ChainService interface {
 
 // GethClient is the subset of go-ethereum client methods implemented by EVMService.
 type GethClient interface {
+	// CallContract reads a contract as specified in the call message at a block height defined by blockNumber where:
+	// blockNumber :
+	//   nil (default) or (-2) → use the latest mined block (“latest”)
+	//   FinalizedBlockNumber(-3) → last finalized block (“finalized”)
+	//
+	// Any positive value is treated as an explicit block height.
 }
 
 type EVMService interface {