code: @DeleteOperation
      public boolean revokeConsents(@Selector final String principal, @Selector final long decisionId) {
          LOGGER.debug("Deleting consent decisions for principal [{}].", principal);
          return this.consentRepository.deleteConsentDecision(decisionId, principal);
      }
docs: Revoke consents.
  
  @param principal  the principal
  @param decisionId the decision id
  @return the boolean