@Override
        public void close() {
            buffers.clear();
        }
Different from {@link GrowableBufferSupplier}, this buffer supplier caches multiple buffers.
So it is suitable for scenarios where multiple buffers are needed. For example:
<pre>
{@code
    BufferSupplier supplier = new GrowableMultiBufferSupplier();

    ByteBuffer buffer1 = supplier.get(1024);
    ByteBuffer buffer2 = supplier.get(2048);

    supplier.release(buffer1);
    supplier.release(buffer2);

    supplier.close();
}
</pre>
clients/src/main/java/org/apache/kafka/common/utils/BufferSupplier.java