code: public VerificationContextBuilder setDocumentHash(DataHash documentHash, Long level) {
          this.documentHash = documentHash;
          this.inputHashLevel = level;
          return this;
      }
docs: Used to set the hash and local aggregation tree height.
  If present then this hash must equal to signature input hash.
  
  @param documentHash document hash
  @return instance of {@link VerificationContextBuilder}