this.beanDesc = beanDesc;
        this.method = method;
        methodName = method.getName();
        parameterTypes = method.getParameterTypes();
        returnType = method.getReturnType();
        parameterizedClassDescs = new ParameterizedClassDesc[parameterTypes.length];
        for (int i = 0; i < parameterTypes.length; ++i) {

            if (parameterType.isPrimitive()) {
                if (parameterType.equals(Boolean.TYPE)) {
                    methodKey.append("java.lang.Boolean");
                } else if (parameterType.equals(Byte.TYPE)) {
                    methodKey.append("java.lang.Byte");
                } else if (parameterType.equals(Character.TYPE)) {

          Class<?>[] parameterTypes = method.getParameterTypes();
          checkArgument(
              parameterTypes.length == 1,
              "Method %s has @Subscribe annotation but has %s parameters. "
                  + "Subscriber methods must have exactly 1 parameter.",
              method,
              parameterTypes.length);

          checkArgument(

        this.beanDesc = beanDesc;
        this.constructor = constructor;
        parameterTypes = constructor.getParameterTypes();
        parameterizedClassDescs = new ParameterizedClassDesc[parameterTypes.length];
        final Map<TypeVariable<?>, Type> typeVariables = beanDesc.getTypeVariables();
        for (int i = 0; i < parameterTypes.length; ++i) {

        assertArgumentNotNull("method", method);

        final Type[] parameterTypes = method.getGenericParameterTypes();
        return GenericsUtil.getRawClass(GenericsUtil.getElementTypeOfCollection(parameterTypes[position]));
    }

    /**
     * Returns the element type of the parameterized collection declared as the method's return type.
     *

  private static boolean isLongTimeUnitBased(Method method) {
    Class<?>[] parameterTypes = method.getParameterTypes();
    return parameterTypes.length >= 2
        && parameterTypes[parameterTypes.length - 2] == long.class
        && parameterTypes[parameterTypes.length - 1] == TimeUnit.class;
  }

  /** Determines whether the given method takes a Duration as its last parameter. */

        final Type[] parameterTypes = getGenericParameters(type);
        if (parameterTypes == null) {
            return desc;
        }
        final ParameterizedClassDesc[] parameterDescs = new ParameterizedClassDesc[parameterTypes.length];
        for (final Indexed<Type> parameterType : indexed(iterable(parameterTypes))) {

  private static boolean isLongTimeUnitBased(Method method) {
    Class<?>[] parameterTypes = method.getParameterTypes();
    return parameterTypes.length >= 2
        && parameterTypes[parameterTypes.length - 2] == long.class
        && parameterTypes[parameterTypes.length - 1] == TimeUnit.class;
  }

  /** Determines whether the given method takes a Duration as its last parameter. */

      Constructor<Prepender> constructor = Prepender.class.getDeclaredConstructor(parameterTypes);
      return Invokable.from(constructor);
    }

    static Invokable<Prepender, Object> method(String name, Class<?>... parameterTypes) {
      try {
        Method method = Prepender.class.getDeclaredMethod(name, parameterTypes);

  public final ImmutableList<Parameter> getParameters() {
    Type[] parameterTypes = getGenericParameterTypes();
    Annotation[][] annotations = getParameterAnnotations();
    @Nullable Object[] annotatedTypes =
        new Object[parameterTypes.length];
    ImmutableList.Builder<Parameter> builder = ImmutableList.builder();
    for (int i = 0; i < parameterTypes.length; i++) {
      builder.add(
          new Parameter(