'Change stream position.
Change the stream position to byte offset offset. offset is
interpreted relative to the position indicated by whence.  Values
for whence are:
* 0 -- start of stream (the default); offset should be zero or positive
* 1 -- current stream position; offset may be negative
* 2 -- end of stream; offset is usually negative
Return the new absolute position.'

def seek(self, pos, whence=0):

    self._unsupported(u'seek')
