public virtual unsafe void AddItem(global::Com.Baidu.Mapapi.Map.OverlayOptions p0)
        {
            const string __id = "addItem.(Lcom/baidu/mapapi/map/OverlayOptions;)V";

            try {
                JniArgumentValue *__args = stackalloc JniArgumentValue [1];
                __args [0] = new JniArgumentValue((p0 == null) ? IntPtr.Zero : ((global::Java.Lang.Object)p0).Handle);
                _members.InstanceMethods.InvokeVirtualVoidMethod(__id, this, __args);
            } finally {
            }
        }
        public virtual unsafe void AddItem(global::Com.Baidu.Mapapi.Map.OverlayOptions p0)
        {
            if (id_addItem_Lcom_baidu_mapapi_map_OverlayOptions_ == IntPtr.Zero)
            {
                id_addItem_Lcom_baidu_mapapi_map_OverlayOptions_ = JNIEnv.GetMethodID(class_ref, "addItem", "(Lcom/baidu/mapapi/map/OverlayOptions;)V");
            }
            try {
                JValue *__args = stackalloc JValue [1];
                __args [0] = new JValue(p0);

                if (((object)this).GetType() == ThresholdType)
                {
                    JNIEnv.CallVoidMethod(((global::Java.Lang.Object) this).Handle, id_addItem_Lcom_baidu_mapapi_map_OverlayOptions_, __args);
                }
                else
                {
                    JNIEnv.CallNonvirtualVoidMethod(((global::Java.Lang.Object) this).Handle, ThresholdClass, JNIEnv.GetMethodID(ThresholdClass, "addItem", "(Lcom/baidu/mapapi/map/OverlayOptions;)V"), __args);
                }
            } finally {
            }
        }
 static void n_AddItem_Lcom_baidu_mapapi_map_OverlayOptions_(IntPtr jnienv, IntPtr native__this, IntPtr native_p0)
 {
     global::Com.Baidu.Mapapi.Map.ItemizedOverlay __this = global::Java.Lang.Object.GetObject <global::Com.Baidu.Mapapi.Map.ItemizedOverlay> (jnienv, native__this, JniHandleOwnership.DoNotTransfer);
     global::Com.Baidu.Mapapi.Map.OverlayOptions  p0     = global::Java.Lang.Object.GetObject <global::Com.Baidu.Mapapi.Map.OverlayOptions> (native_p0, JniHandleOwnership.DoNotTransfer);
     __this.AddItem(p0);
 }