import net.minecraft.client.renderer.culling.ClippingHelper; //导入依赖的package包/类
public static ClippingHelper getInstance()
{
    instance.init();
    return instance;
}
 

import net.minecraft.client.renderer.culling.ClippingHelper; //导入依赖的package包/类
public static ClippingHelper getInstanceWrapper() {
    INSTANCE.init();
    return INSTANCE;
}
 

import net.minecraft.client.renderer.culling.ClippingHelper; //导入依赖的package包/类
public static ClippingHelper func_78558_a() {
   field_78563_e.func_78560_b();
   return field_78563_e;
}
 

import net.minecraft.client.renderer.culling.ClippingHelper; //导入依赖的package包/类
/**
 * Initialises the ClippingHelper object then returns an instance of it.
 */
public static ClippingHelper getInstance()
{
    instance.init();
    return instance;
}