autogenerate resource id if not present

Author: hoegertn

src/main/java/org/restdoc/server/impl/RestDocGenerator.java

@@ -182,7 +182,12 @@ private void addResourceMethod(final String basepath, final Method method) {
 			path += "{?" + string + "}";
 		}
 
-		final String id = docAnnotation.id();
+		final String id;
+		if ((docAnnotation.id() != null) && !docAnnotation.id().isEmpty()) {
+			id = docAnnotation.id();
+		} else {
+			id = method.getName();
+		}
 		final String resourceDescription = docAnnotation.resourceDescription();
 
 		final String methodDescription = docAnnotation.methodDescription();

src/main/java/org/restdoc/server/impl/annotations/RestDoc.java

@@ -26,7 +26,7 @@
 	/**
 	 * @return the description of the resource method
 	 */
-	String methodDescription();
+	String methodDescription() default "";
 
 	/**
 	 * @return the id of the resource

src/test/java/org/restdoc/server/impl/MyRSBean.java

@@ -71,7 +71,7 @@ public String getMessageList() {
 	 */
 	@GET
 	@Path(".json")
-	@RestDoc(id = "messageList2", resourceDescription = "A list of messages", methodDescription = "List all messages")
+	@RestDoc(resourceDescription = "A list of messages", methodDescription = "List all messages")
 	@RestDocResponse(headers = {@RestDocHeader(name = "X-Call", description = "Remaining calls", required = false)})
 	@RestDocReturnCodes({@RestDocReturnCode(code = "200", description = "All went well"), @RestDocReturnCode(code = "403", description = "Access not allowed")})
 	@Produces("application/json")