feat: Update the code

Author: ZPascal

cloudfoundry-operations/src/main/java/org/cloudfoundry/operations/applications/DefaultApplications.java

@@ -1640,12 +1640,9 @@ private static Flux<LogMessage> getLogs(
     private static Flux<Log> getRecentLogsLogCache(
             Mono<LogCacheClient> logCacheClient, ReadRequest readRequest) {
         return requestLogsRecentLogCache(logCacheClient, readRequest)
-                .map(EnvelopeBatch::getBatch)
-                .map(List::stream)
-                .flatMapIterable(envelopeStream -> envelopeStream.collect(Collectors.toList()))
-                .filter(e -> e.getLog() != null)
+                .flatMapIterable(EnvelopeBatch::getBatch)
                 .sort(LOG_MESSAGE_COMPARATOR_LOG_CACHE)
-                .map(org.cloudfoundry.logcache.v1.Envelope::getLog);
+                .mapNotNull(org.cloudfoundry.logcache.v1.Envelope::getLog);
     }
 
     @SuppressWarnings("unchecked")

integration-test/src/test/java/org/cloudfoundry/operations/ApplicationsTest.java

@@ -542,6 +542,7 @@ public void logs() throws IOException {
     }
 
     @Test
+    @IfCloudFoundryVersion(greaterThanOrEqualTo = CloudFoundryVersion.PCF_4_v2)
     public void logsRecent() throws IOException {
         String applicationName = this.nameFactory.getApplicationName();
         Mono<String> applicationGuid =