@JsonAppend causes NullPointerException

[cleiner]

Afterburner does not seem to work with @JsonAppend. The following code reproduces the issue:

  @Test
  public void testJsonAppendWithAfterburner() throws Exception {
    ObjectMapper mapper = new ObjectMapper();
    mapper.registerModule(new AfterburnerModule());
    String json = mapper.writeValueAsString(new Pojo("foo"));
    assertEquals("{\"name\":\"foo\",\"virtual\":\"bar\"}", json);
  }


  @JsonAppend(props = @Prop(name = "virtual", value = MyVirtualPropertyWriter.class))
  public static class Pojo {
    private final String name;
    public Pojo(String name) {
      this.name = name;
    }
    public String getName() {
      return name;
    }
  }

  public static class MyVirtualPropertyWriter extends VirtualBeanPropertyWriter {
    public MyVirtualPropertyWriter() {
    }
    protected MyVirtualPropertyWriter(BeanPropertyDefinition propDef, Annotations contextAnnotations,
        JavaType declaredType) {
      super(propDef, contextAnnotations, declaredType);
    }
    @Override
    protected Object value(Object bean, JsonGenerator jgen, SerializerProvider prov) throws Exception {
      return "bar";
    }
    @Override
    public VirtualBeanPropertyWriter withConfig(MapperConfig<?> config, AnnotatedClass declaringClass,
        BeanPropertyDefinition propDef, JavaType type) {
      return new MyVirtualPropertyWriter(propDef, declaringClass.getAnnotations(), type);
    }
  }

Running the test results in:

java.lang.NullPointerException
    at com.fasterxml.jackson.module.afterburner.ser.SerializerModifier.findProperties(SerializerModifier.java:82)
    at com.fasterxml.jackson.module.afterburner.ser.SerializerModifier.changeProperties(SerializerModifier.java:49)
    at com.fasterxml.jackson.databind.ser.BeanSerializerFactory.constructBeanSerializer(BeanSerializerFactory.java:374)
    at com.fasterxml.jackson.databind.ser.BeanSerializerFactory.findBeanSerializer(BeanSerializerFactory.java:272)
    at com.fasterxml.jackson.databind.ser.BeanSerializerFactory._createSerializer2(BeanSerializerFactory.java:225)
    at com.fasterxml.jackson.databind.ser.BeanSerializerFactory.createSerializer(BeanSerializerFactory.java:153)
    at com.fasterxml.jackson.databind.SerializerProvider._createUntypedSerializer(SerializerProvider.java:1199)
    at com.fasterxml.jackson.databind.SerializerProvider._createAndCacheUntypedSerializer(SerializerProvider.java:1153)
    at com.fasterxml.jackson.databind.SerializerProvider.findValueSerializer(SerializerProvider.java:481)
    at com.fasterxml.jackson.databind.SerializerProvider.findTypedValueSerializer(SerializerProvider.java:679)
    at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:107)
    at com.fasterxml.jackson.databind.ObjectMapper._configAndWriteValue(ObjectMapper.java:3525)
    at com.fasterxml.jackson.databind.ObjectMapper.writeValueAsString(ObjectMapper.java:2915)
    at com.bitlok.JsonAppendTest.testJsonAppendWithAfterburner(JsonAppendTest.java:26)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:483)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)

I've tested this with 2.6.1. Without the AfterburnerModule it works as expected.