private void writeToProperties(final RedisProperties properties, Message<?> message) {
final Object payload = message.getPayload();
if (this.extractPayloadElements && payload instanceof Properties) {
this.processInPipeline(
new PipelineCallback() {
public void process() {
properties.putAll((Properties) payload);
}
});
} else {
Assert.isInstanceOf(String.class, payload, "For property, payload must be a String.");
Object key = this.determineMapKey(message, true);
properties.put(key, payload);
}
}