Added tests for ExtensionMethod

test/transform/resource/before/ExtensionMethodFunctional.java

@@ -0,0 +1,33 @@
+// version 8:
+import java.util.function.Function;
+import java.util.function.Consumer;
+
+import lombok.experimental.ExtensionMethod;
+
+@ExtensionMethod(ExtensionMethodFunctional.Extensions.class)
+class ExtensionMethodFunctional {
+	public void test() {
+		String test = "test";
+		test = test.map(s -> s.reverse());
+		
+		test.consume(s -> System.out.println("1: " + s), s -> System.out.println("2: " + s));
+		test.consume(System.out::println, System.out::println);
+	}
+	
+	static class Extensions {
+		public static <T, R> R map(T value, Function<T, R> mapper) {
+			return mapper.apply(value);
+		}
+		
+		public static String reverse(String string) {
+			return new StringBuilder(string).reverse().toString();
+		}
+
+		@SafeVarargs
+		public static <T> void consume(T o, Consumer<T>... consumer) {
+			for (int i = 0; i < consumer.length; i++) {
+				consumer[i].accept(o);
+			}
+		}
+	}
+}