/// <summary>Append a source buffer to the end of the internal buffer, resizing the internal buffer as required.</summary>
/// <param name="srcBuffer">from which to copy.</param>
/// <param name="srcOffset">in the source buffer from which to copy.</param>
/// <param name="length">in bytes to copy from the source buffer.</param>
/// <returns>the builder for fluent API usage.</returns>
public virtual BufferBuilder Append(IClientProtocolBuffer srcBuffer, int srcOffset, int length)
{
EnsureCapacity(length);
srcBuffer.GetBytes(srcOffset, _protocolBuffer.ByteArray(), _position, length);
_position += length;
return this;
}