Fix Sonar

Author: ComputerDaddyGuy

src/main/java/io/github/computerdaddyguy/jfiletreeprettyprinter/renderer/emoji/PathExtensionEmojiFunction.java

@@ -39,7 +39,6 @@ public String apply(Path path) {
 	private static Map<String, String> toLowerCaseKeys(Map<String, String> mapping) {
 		Objects.requireNonNull(mapping, "mapping is null");
 		return mapping.entrySet().stream()
-			.peek(entry -> System.out.println("----- " + entry))
 			.collect(
 				Collectors.toMap(
 					entry -> entry.getKey().toLowerCase(),

src/main/java/io/github/computerdaddyguy/jfiletreeprettyprinter/renderer/emoji/PathMatcherEmojiFunction.java

@@ -6,6 +6,7 @@
 import java.util.Objects;
 import java.util.function.Function;
 import org.jspecify.annotations.NullMarked;
+import org.jspecify.annotations.Nullable;
 
 @NullMarked
 class PathMatcherEmojiFunction implements Function<Path, String> {
@@ -18,6 +19,7 @@ public PathMatcherEmojiFunction(List<EmojiMatch> mapping) {
 	}
 
 	@Override
+	@Nullable
 	public String apply(Path path) {
 		return mapping.stream()
 			.filter(item -> item.matches(path))

src/main/java/io/github/computerdaddyguy/jfiletreeprettyprinter/renderer/emoji/SequentialEmojiFunction.java

@@ -4,6 +4,7 @@
 import java.util.Objects;
 import java.util.function.Function;
 import org.jspecify.annotations.NullMarked;
+import org.jspecify.annotations.Nullable;
 
 @NullMarked
 class SequentialEmojiFunction implements Function<Path, String> {
@@ -16,6 +17,7 @@ public SequentialEmojiFunction(Iterable<Function<Path, String>> functions) {
 	}
 
 	@Override
+	@Nullable
 	public String apply(Path path) {
 		String emoji = null;
 		for (var fn : functions) {

src/test/java/io/github/computerdaddyguy/jfiletreeprettyprinter/EmojisTest.java

@@ -19,9 +19,7 @@ class EmojisTest {
 	void emptyDir() {
 
 		var printer = FileTreePrettyPrinter.builder()
-			.customizeOptions(
-				options -> options.withDefaultEmojis()
-			)
+			.customizeOptions(PrettyPrintOptions::withDefaultEmojis)
 			.build();
 
 		var path = FileStructures.emptyDirectory(root);
@@ -34,9 +32,7 @@ void emptyDir() {
 	void emojis() {
 
 		var printer = FileTreePrettyPrinter.builder()
-			.customizeOptions(
-				options -> options.withDefaultEmojis()
-			)
+			.customizeOptions(PrettyPrintOptions::withDefaultEmojis)
 			.build();
 
 		var result = printer.prettyPrint("src/example/resources/emojis");