The function getSystemAnchoringIccfProofOp should be utilized to retrieve a system anchoring proof operation
for a given transaction. The txToProve must be a cluster anchored transaction
Parameters
client: IClient
the client to use to get the system anchoring proof
The function
getSystemAnchoringIccfProofOpshould be utilized to retrieve a system anchoring proof operation for a given transaction. ThetxToProvemust be a cluster anchored transaction