getPreimage method
Get the preimage secret associated to a digest proposition.
digestProposition
The Digest Proposition for which to retrieve the preimage secret for
Returns the preimage secret associated to the Digest Proposition if it exists. Else null
Implementation
@override
quivr_shared
.Preimage? getPreimage(Proposition_Digest digestProposition) {
// TODO(ultimaterex): implement getPreimage
throw UnimplementedError();
}