public MessageBusParams setDocumentProtocolPoliciesConfig(DocumentProtocolPoliciesConfig policiesConfig,
                                                              DistributionConfig distributionConfig) {
        this.policiesConfig = requireNonNull(policiesConfig);
        this.distributionConfig = requireNonNull(distributionConfig);
        return this;
    }
Sets the config used by the {@link DocumentProtocol} policies.
documentapi/src/main/java/com/yahoo/documentapi/messagebus/MessageBusParams.java