private CompositeBuffer toCompositeInputContentBuffer() {
if (!inputContentBuffer.isComposite()) {
final CompositeBuffer compositeBuffer = CompositeBuffer.newBuffer(
connection.getTransport().getMemoryManager());
compositeBuffer.allowBufferDispose(true);
compositeBuffer.allowInternalBuffersDispose(true);
compositeBuffer.append(inputContentBuffer);
inputContentBuffer = compositeBuffer;
}