ExceptionInIntializerError with MapTypeStyleFeatureType and MapTypeStyleElementType

I posted this question on StackOverflow, but I haven't received any answers, so I'm posting here.

I'm using GWT and GoogleMaps (v3.8.0), which I have working fine. But now I'm trying to use MapTypeStyle to set the styles of the roads to off. Here is some example code:

package com.test.client;

import com.google.gwt.ajaxloader.client.AjaxLoader;

import com.google.gwt.ajaxloader.client.AjaxLoader.AjaxLoaderOptions;

import com.google.gwt.core.client.EntryPoint;

import com.google.gwt.core.client.JsArray;

import com.google.gwt.dom.client.Document;

import com.google.maps.gwt.client.GoogleMap;

import com.google.maps.gwt.client.LatLng;

import com.google.maps.gwt.client.MapOptions;

import com.google.maps.gwt.client.MapTypeId;

import com.google.maps.gwt.client.MapTypeStyle;

import com.google.maps.gwt.client.MapTypeStyleElementType;

import com.google.maps.gwt.client.MapTypeStyleFeatureType;

import com.google.maps.gwt.client.MapTypeStyler;

public class GwtTest implements EntryPoint {

@Override

public void onModuleLoad() {

AjaxLoaderOptions options = AjaxLoaderOptions.newInstance();

options.setOtherParms("sensor=false");

Runnable callback = new Runnable() {

public void run() {

createMap();

}

};

AjaxLoader.loadApi("maps", "3", callback, options);

}

public void createMap() {

JsArray<MapTypeStyle> styles = (JsArray<MapTypeStyle>) JsArray.<MapTypeStyle>createArray();

JsArray<MapTypeStyler> roadStylers = (JsArray<MapTypeStyler>) JsArray.<MapTypeStyler>createArray();

MapTypeStyler roadStyler = MapTypeStyler.visibility("off");

roadStylers.push(roadStyler);

MapTypeStyle roadStyle = MapTypeStyle.create();

roadStyle.setStylers(roadStylers);

roadStyle.setFeatureType(MapTypeStyleFeatureType.ROAD);

roadStyle.setElementType(MapTypeStyleElementType.ALL);

styles.push(roadStyle);

final MapOptions mapOpts = MapOptions.create();

mapOpts.setZoom(4);

mapOpts.setCenter(LatLng.create(37.09024, -95.712891));

mapOpts.setMapTypeId(MapTypeId.TERRAIN);

mapOpts.setStreetViewControl(false);

mapOpts.setStyles(styles);

final GoogleMap map = GoogleMap.create(Document.get().getElementById("map_canvas"), mapOpts);

}
}

However, when I run that code, I get this error:

11:18:11.195 [ERROR] [gwttest] Uncaught exception escaped

java.lang.ExceptionInInitializerError: null

    at com.test.client.GwtTest.createMap(GwtTest.java:42)

    at com.test.client.GwtTest$1.run(GwtTest.java:25)

    at com.google.gwt.ajaxloader.client.ExceptionHelper.runProtected(ExceptionHelper.java:36)

    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 com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)

    at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)

    at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)

    at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessages(BrowserChannelServer.java:293)

    at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:547)

    at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:364)

    at java.lang.Thread.run(Thread.java:745)

Caused by: java.lang.NullPointerException: null

    at com.google.maps.gwt.client.MapTypeStyleFeatureType$.register(MapTypeStyleFeatureType.java:227)

    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 com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)

    at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)

    at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)

    at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessagesWhileWaitingForReturn(BrowserChannelServer.java:338)

    at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:219)

    at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:136)

    at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:576)

    at com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:284)

    at com.google.gwt.dev.shell.JavaScriptHost.invokeNativeObject(JavaScriptHost.java:91)

    at com.google.maps.gwt.client.MapTypeStyleFeatureType$.create(MapTypeStyleFeatureType.java)

    at com.google.maps.gwt.client.MapTypeStyleFeatureType$.&lt;clinit&gt;(MapTypeStyleFeatureType.java:39)

    at com.test.client.GwtTest.createMap(GwtTest.java:42)

    at com.test.client.GwtTest$1.run(GwtTest.java:25)

    at com.google.gwt.ajaxloader.client.ExceptionHelper.runProtected(ExceptionHelper.java:36)

    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 com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)

    at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)

    at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)

    at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessages(BrowserChannelServer.java:293)

    at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:547)

    at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:364)

    at java.lang.Thread.run(Thread.java:745)

The weird thing is, that's an error while initializing a static variable internal to GWT GoogleMaps!

Am I doing something wrong, or is this a bug? Is there a workaround?

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