import io.netty.buffer.SwappedByteBuf; //导入依赖的package包/类
@Setup
public void setup() {
    swappedByteBuf = new SwappedByteBuf(Unpooled.directBuffer(8));
    unsafeSwappedByteBuf = Unpooled.directBuffer(8).order(ByteOrder.LITTLE_ENDIAN);
    if (unsafeSwappedByteBuf.getClass().equals(SwappedByteBuf.class)) {
        throw new IllegalStateException("Should not use " + SwappedByteBuf.class.getSimpleName());
    }
}
 

import io.netty.buffer.SwappedByteBuf; //导入依赖的package包/类
@Override
public ByteBuf order(ByteOrder endianness) {
    if (endianness == null) {
        throw new NullPointerException("endianness");
    }
    if (endianness == order()) {
        return this;
    }

    SwappedByteBuf swapped = this.swapped;
    if (swapped == null) {
        this.swapped = swapped = new SwappedByteBuf(this);
    }
    return swapped;
}
 

import io.netty.buffer.SwappedByteBuf; //导入依赖的package包/类
@Override
public ByteBuf order(final ByteOrder byteOrder) {
	if (byteOrder == null) {
		throw new NullPointerException("endianness");
	}
	if (byteOrder == this.order()) {
		return this;
	}
	SwappedByteBuf swapped = this.swapped;
	if (swapped == null) {
		swapped = (this.swapped = new SwappedByteBuf(this));
	}
	return swapped;
}