import org.checkerframework.checker.initialization.qual.UnknownInitialization;
import org.checkerframework.checker.nullness.qual.*;
import org.checkerframework.checker.nullness.qual.EnsuresNonNull;

@org.checkerframework.framework.qual.DefaultQualifier(Nullable.class)
public class RawMethodInvocation {
  Object a;
  Object b;

  RawMethodInvocation(boolean constructor_inits_a) {
    a = 1;
    init_b();
  }

  @EnsuresNonNull("b")
  void init_b(@UnknownInitialization RawMethodInvocation this) {
    b = 2;
  }

  RawMethodInvocation(int constructor_inits_none) {
    init_ab();
  }

  @EnsuresNonNull({"a", "b"})
  void init_ab(@UnknownInitialization RawMethodInvocation this) {
    a = 1;
    b = 2;
  }

  RawMethodInvocation(long constructor_escapes_raw) {
    a = 1;
    // this call is not valid, this is still raw
    // :: error: (method.invocation)
    nonRawMethod();
    b = 2;
  }

  void nonRawMethod() {}
}