Add the given {@link ByteBuf}.
<p>
Be aware that this method does not increase the {@code writerIndex} of the {@link CompositeByteBuf}.
If you need to have it increased use {@link #addComponent(bool, ByteBuf)}.
<p>
{@link ByteBuf#release()} ownership of {@code buffer} is transferred to this {@link CompositeByteBuf}.
@param buffer the {@link ByteBuf} to add. {@link ByteBuf#release()} ownership is transferred to this
{@link CompositeByteBuf}.
Add the given {@link ByteBuf}. <p> Be aware that this method does not increase the {@code writerIndex} of the {@link CompositeByteBuf}. If you need to have it increased use {@link #addComponent(bool, ByteBuf)}. <p> {@link ByteBuf#release()} ownership of {@code buffer} is transferred to this {@link CompositeByteBuf}. @param buffer the {@link ByteBuf} to add. {@link ByteBuf#release()} ownership is transferred to this {@link CompositeByteBuf}.