Add observationConvention setter

Signed-off-by: Tran Ngoc Nhan <[email protected]>

Author: ngocnhan-tran1996

spring-rabbit-stream/src/main/java/org/springframework/rabbit/stream/producer/RabbitStreamTemplate.java

@@ -221,6 +221,14 @@ public void setObservationEnabled(boolean observationEnabled) {
 		this.observationEnabled = observationEnabled;
 	}
 
+	/**
+	 * Set an observation convention; used to add additional key/values to observations.
+	 * @param observationConvention the convention.
+	 * @since 4.0
+	 */
+	public void setObservationConvention(RabbitStreamTemplateObservationConvention observationConvention) {
+		this.observationConvention = observationConvention;
+	}
 
 	@Override
 	public MessageConverter messageConverter() {