Added tests for @ExtensionMethod

test/transform/resource/after-delombok/ExtensionMethodPlain.java

@@ -0,0 +1,17 @@
+class ExtensionMethodPlain {
+	public String test() {
+		int[] intArray = {5, 3, 8, 2};
+		java.util.Arrays.sort(intArray);
+		String iAmNull = null;
+		return ExtensionMethodPlain.Extensions.or(iAmNull, ExtensionMethodPlain.Extensions.toTitleCase("hELlO, WORlD!"));
+	}
+	static class Extensions {
+		public static <T> T or(T obj, T ifNull) {
+			return obj != null ? obj : ifNull;
+		}
+		public static String toTitleCase(String in) {
+			if (in.isEmpty()) return in;
+			return "" + Character.toTitleCase(in.charAt(0)) + in.substring(1).toLowerCase();
+		}
+	}
+}