Fixes #1197, add Objects.requireNonNull and Preconditions.checkkNotNull to supported null-check styles

test/transform/resource/after-ecj/NonNullWithGuava.java

@@ -0,0 +1,36 @@
+import static com.google.common.base.Preconditions.*;
+public class NonNullWithGuava {
+  private @lombok.NonNull @lombok.Setter String test;
+  public NonNullWithGuava() {
+    super();
+  }
+  public void testMethod(@lombok.NonNull String arg) {
+    com.google.common.base.Preconditions.checkNotNull(arg, "arg is marked non-null but is null");
+    System.out.println(arg);
+  }
+  public void testMethodWithCheck1(@lombok.NonNull String arg) {
+    checkNotNull(arg);
+  }
+  public void testMethodWithCheckAssign(@lombok.NonNull String arg) {
+    test = checkNotNull(arg);
+  }
+  public void testMethodWithCheck2(@lombok.NonNull String arg) {
+    com.google.common.base.Preconditions.checkNotNull(arg);
+  }
+  public void testMethodWithFakeCheck1(@lombok.NonNull String arg) {
+    com.google.common.base.Preconditions.checkNotNull(arg, "arg is marked non-null but is null");
+    checkNotNull("");
+  }
+  public void testMethodWithFakeCheck2(@lombok.NonNull String arg) {
+    com.google.common.base.Preconditions.checkNotNull(arg, "arg is marked non-null but is null");
+    com.google.common.base.Preconditions.checkNotNull(test);
+  }
+  public void testMethodWithFakeCheckAssign(@lombok.NonNull String arg) {
+    com.google.common.base.Preconditions.checkNotNull(arg, "arg is marked non-null but is null");
+    test = checkNotNull(test);
+  }
+  public @java.lang.SuppressWarnings("all") void setTest(final @lombok.NonNull String test) {
+    com.google.common.base.Preconditions.checkNotNull(test, "test is marked non-null but is null");
+    this.test = test;
+  }
+}