Ensure System property is properly parsed when in Lambda expressions

Please ensure all the scenarios below are covered in tests, especially the lambda expression (Example 5).

```java
// Example 1
private static SpringApplicationBuilder configureApplication(SpringApplicationBuilder builder) {
System.setProperty("org.jboss.logging.provider", "slf4j");
return builder.sources(SpringInitializer.class);
}

// Example 2
List profiles = new ArrayList<>();
if (Boolean.parseBoolean(System.getProperty("profile.eventScheduler", Boolean.toString(true)))) {
profiles.add("EventScheduler");
}
if (Boolean.parseBoolean(System.getProperty("profile.taskScheduler", Boolean.toString(true)))) {
profiles.add("TaskScheduler");
}

// Example 3
private String getSuffix() {
String suffix = "";
String instance = System.getenv("INSTANCE_ID");
if (StringUtils.isNotEmpty(instance)) {
String[] split = StringUtils.split(instance, "-");
if (split.length > 0) {
suffix = "-" + split[0];
}
}
return suffix;
}

// Example 4
static {
String port;
if ((port = System.getProperty("test.port")) != null) {
TEST_PORT = Integer.parseInt(port);
}
}

// Example 5
HttpClient httpClient = HttpClient.create()
.proxy(proxy -> proxy
.type(ProxyProvider.Proxy.HTTP)
.host(System.getProperty("https.proxyHost"))
.port(Integer.valueOf(System.getProperty("https.proxyPort")))
.nonProxyHosts(createNonProxyPattern(System.getProperty("http.nonProxyHosts")))
);
```

No file or test path is provided. Start by locating the rule that handles Java System property access and its existing tests; use the five examples, especially the lambda in Example 5, as inputs. Done means all listed forms are covered and System property calls are parsed consistently.

Written by the indexing model from the issue text.