Inject LOOKUP_DESTINATION_HEADER if definition property is not used

spring-cloud-function-context/src/main/java/org/springframework/cloud/function/context/FunctionProperties.java

@@ -43,6 +43,12 @@ public class FunctionProperties {
 	 */
 	private String definition;
 
+
+	private String contentType = "application/json";
+
+
+	private String accept = "application/json";
+
 	/**
 	 * SpEL expression which should result in function definition (e.g., function name or composition instruction).
 	 * NOTE: SpEL evaluation context's root object is the input argument (e.g., Message).
@@ -64,4 +70,20 @@ public class FunctionProperties {
 	public void setRoutingExpression(String routingExpression) {
 		this.routingExpression = routingExpression;
 	}
+
+	public String getContentType() {
+		return contentType;
+	}
+
+	public void setContentType(String contentType) {
+		this.contentType = contentType;
+	}
+
+	public String getAccept() {
+		return accept;
+	}
+
+	public void setAccept(String accept) {
+		this.accept = accept;
+	}
 }

spring-cloud-function-context/src/main/java/org/springframework/cloud/function/context/catalog/SimpleFunctionRegistry.java

@@ -173,6 +173,7 @@ public class SimpleFunctionRegistry implements FunctionRegistry, FunctionInspect
 
 		if (this.functionAroundWrapper != null && function != null) {
 			return (T) new FunctionInvocationWrapper(function) {
+				@SuppressWarnings("rawtypes")
 				@Override
 				Object doApply(Object input, boolean consumer, Function<Message, Message> enricher) {
 					return functionAroundWrapper.apply(input, function);
@@ -805,7 +806,7 @@ public class SimpleFunctionRegistry implements FunctionRegistry, FunctionInspect
 				// this needs revisiting as the type is not always Class (think really complex types)
 				Type rawType = FunctionTypeUtils.unwrapActualTypeByIndex(type, 0);
 				if (logger.isDebugEnabled()) {
-					logger.debug("Raw type of value: " + value + "is " + rawType);
+					logger.debug("Raw type of value: " + value + " is " + rawType);
 				}
 
 				if (rawType instanceof ParameterizedType) {