public boolean enableErrantRecordReporter() {
        String dqlTopic = dlqTopicName();
        return !dqlTopic.isEmpty() || enableErrorLog();
    }
Perform preflight validation for the sink-specific properties for a connector.

@param props           the configuration for the sink connector
@param validatedConfig any already-known {@link ConfigValue validation results} for the configuration.
                       May be empty, but may not be null. Any configuration errors discovered by this method will
                       be {@link ConfigValue#addErrorMessage(String) added} to a value in this map, adding a new
                       entry if one for the problematic property does not already exist.
connect/runtime/src/main/java/org/apache/kafka/connect/runtime/SinkConnectorConfig.java