[checkerframework]

A bit of a shadow feature because the checker framework folks need to do some work on their side.
this update makes lombok generate a few checker framework annotations (if configured to do so)
which let the checker framework add warnings and errors for example if you misuse builders, or ignore
the return values of withers, etc.

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

@@ -0,0 +1,142 @@
+import java.util.List;
+import lombok.Singular;
+class CheckerFrameworkSuperBuilder {
+  public static @lombok.experimental.SuperBuilder class Parent {
+    public static abstract @java.lang.SuppressWarnings("all") class ParentBuilder<C extends Parent, B extends ParentBuilder<C, B>> {
+      private @java.lang.SuppressWarnings("all") int x$value;
+      private @java.lang.SuppressWarnings("all") boolean x$set;
+      private @java.lang.SuppressWarnings("all") int y;
+      private @java.lang.SuppressWarnings("all") int z;
+      private @java.lang.SuppressWarnings("all") java.util.ArrayList<String> names;
+      public ParentBuilder() {
+      }
+      protected abstract @org.checkerframework.checker.builder.qual.ReturnsReceiver @org.checkerframework.dataflow.qual.SideEffectFree @java.lang.SuppressWarnings("all") B self();
+      public abstract @org.checkerframework.dataflow.qual.SideEffectFree @java.lang.SuppressWarnings("all") C build(final @org.checkerframework.checker.builder.qual.CalledMethods({"y", "z"}) ParentBuilder this);
+      public @org.checkerframework.checker.builder.qual.ReturnsReceiver @java.lang.SuppressWarnings("all") B x(final @org.checkerframework.checker.builder.qual.NotCalledMethods("x") ParentBuilder this, final int x) {
+        this.x$value = x;
+        x$set = true;
+        return self();
+      }
+      public @org.checkerframework.checker.builder.qual.ReturnsReceiver @java.lang.SuppressWarnings("all") B y(final @org.checkerframework.checker.builder.qual.NotCalledMethods("y") ParentBuilder this, final int y) {
+        this.y = y;
+        return self();
+      }
+      public @org.checkerframework.checker.builder.qual.ReturnsReceiver @java.lang.SuppressWarnings("all") B z(final @org.checkerframework.checker.builder.qual.NotCalledMethods("z") ParentBuilder this, final int z) {
+        this.z = z;
+        return self();
+      }
+      public @org.checkerframework.checker.builder.qual.ReturnsReceiver @java.lang.SuppressWarnings("all") B name(final String name) {
+        if ((this.names == null))
+            this.names = new java.util.ArrayList<String>();
+        this.names.add(name);
+        return self();
+      }
+      public @org.checkerframework.checker.builder.qual.ReturnsReceiver @java.lang.SuppressWarnings("all") B names(final java.util.Collection<? extends String> names) {
+        if ((this.names == null))
+            this.names = new java.util.ArrayList<String>();
+        this.names.addAll(names);
+        return self();
+      }
+      public @org.checkerframework.checker.builder.qual.ReturnsReceiver @java.lang.SuppressWarnings("all") B clearNames() {
+        if ((this.names != null))
+            this.names.clear();
+        return self();
+      }
+      public @java.lang.Override @org.checkerframework.dataflow.qual.SideEffectFree @java.lang.SuppressWarnings("all") java.lang.String toString() {
+        return (((((((("CheckerFrameworkSuperBuilder.Parent.ParentBuilder(x$value=" + this.x$value) + ", y=") + this.y) + ", z=") + this.z) + ", names=") + this.names) + ")");
+      }
+    }
+    private static final @java.lang.SuppressWarnings("all") class ParentBuilderImpl extends ParentBuilder<Parent, ParentBuilderImpl> {
+      private ParentBuilderImpl() {
+      }
+      protected @java.lang.Override @org.checkerframework.checker.builder.qual.ReturnsReceiver @org.checkerframework.dataflow.qual.SideEffectFree @java.lang.SuppressWarnings("all") ParentBuilderImpl self() {
+        return this;
+      }
+      public @java.lang.Override @org.checkerframework.dataflow.qual.SideEffectFree @java.lang.SuppressWarnings("all") Parent build(final @org.checkerframework.checker.builder.qual.CalledMethods({"y", "z"}) ParentBuilderImpl this) {
+        return new Parent(this);
+      }
+    }
+    @lombok.Builder.Default int x;
+    int y;
+    int z;
+    @Singular List<String> names;
+    private static @java.lang.SuppressWarnings("all") int $default$x() {
+      return 5;
+    }
+    protected @org.checkerframework.common.aliasing.qual.Unique @java.lang.SuppressWarnings("all") Parent(final ParentBuilder<?, ?> b) {
+      super();
+      if (b.x$set)
+          this.x = b.x$value;
+      else
+          this.x = Parent.$default$x();
+      this.y = b.y;
+      this.z = b.z;
+      java.util.List<String> names;
+      switch (((b.names == null) ? 0 : b.names.size())) {
+      case 0 :
+          names = java.util.Collections.emptyList();
+          break;
+      case 1 :
+          names = java.util.Collections.singletonList(b.names.get(0));
+          break;
+      default :
+          names = java.util.Collections.unmodifiableList(new java.util.ArrayList<String>(b.names));
+      }
+      this.names = names;
+    }
+    public static @org.checkerframework.common.aliasing.qual.Unique @java.lang.SuppressWarnings("all") ParentBuilder<?, ?> builder() {
+      return new ParentBuilderImpl();
+    }
+  }
+  public static @lombok.experimental.SuperBuilder class Child extends Parent {
+    public static abstract @java.lang.SuppressWarnings("all") class ChildBuilder<C extends Child, B extends ChildBuilder<C, B>> extends Parent.ParentBuilder<C, B> {
+      private @java.lang.SuppressWarnings("all") int a$value;
+      private @java.lang.SuppressWarnings("all") boolean a$set;
+      private @java.lang.SuppressWarnings("all") int b;
+      public ChildBuilder() {
+      }
+      protected abstract @java.lang.Override @org.checkerframework.checker.builder.qual.ReturnsReceiver @org.checkerframework.dataflow.qual.SideEffectFree @java.lang.SuppressWarnings("all") B self();
+      protected abstract @java.lang.Override @org.checkerframework.dataflow.qual.SideEffectFree @java.lang.SuppressWarnings("all") C build(final @org.checkerframework.checker.builder.qual.CalledMethods("b") ChildBuilder this);
+      public @org.checkerframework.checker.builder.qual.ReturnsReceiver @java.lang.SuppressWarnings("all") B a(final @org.checkerframework.checker.builder.qual.NotCalledMethods("a") ChildBuilder this, final int a) {
+        this.a$value = a;
+        a$set = true;
+        return self();
+      }
+      public @org.checkerframework.checker.builder.qual.ReturnsReceiver @java.lang.SuppressWarnings("all") B b(final @org.checkerframework.checker.builder.qual.NotCalledMethods("b") ChildBuilder this, final int b) {
+        this.b = b;
+        return self();
+      }
+      public @java.lang.Override @org.checkerframework.dataflow.qual.SideEffectFree @java.lang.SuppressWarnings("all") java.lang.String toString() {
+        return (((((("CheckerFrameworkSuperBuilder.Child.ChildBuilder(super=" + super.toString()) + ", a$value=") + this.a$value) + ", b=") + this.b) + ")");
+      }
+    }
+    private static final @java.lang.SuppressWarnings("all") class ChildBuilderImpl extends ChildBuilder<Child, ChildBuilderImpl> {
+      private ChildBuilderImpl() {
+      }
+      protected @java.lang.Override @org.checkerframework.checker.builder.qual.ReturnsReceiver @org.checkerframework.dataflow.qual.SideEffectFree @java.lang.SuppressWarnings("all") ChildBuilderImpl self() {
+        return this;
+      }
+      public @java.lang.Override @org.checkerframework.dataflow.qual.SideEffectFree @java.lang.SuppressWarnings("all") Child build(final @org.checkerframework.checker.builder.qual.CalledMethods("b") ChildBuilderImpl this) {
+        return new Child(this);
+      }
+    }
+    @lombok.Builder.Default int a;
+    int b;
+    private static @java.lang.SuppressWarnings("all") int $default$a() {
+      return 1;
+    }
+    protected @org.checkerframework.common.aliasing.qual.Unique @java.lang.SuppressWarnings("all") Child(final ChildBuilder<?, ?> b) {
+      super(b);
+      if (b.a$set)
+          this.a = b.a$value;
+      else
+          this.a = Child.$default$a();
+      this.b = b.b;
+    }
+    public static @org.checkerframework.common.aliasing.qual.Unique @java.lang.SuppressWarnings("all") ChildBuilder<?, ?> builder() {
+      return new ChildBuilderImpl();
+    }
+  }
+  CheckerFrameworkSuperBuilder() {
+  }
+}