Request message for CreateReadSession.
.. attribute:: parent
Required. The request project that owns the session, in the
form of projects/{project_id}.
Max initial number of streams. If unset or zero, the server
will provide a value of streams so as to produce reasonable
throughput. Must be non-negative. The number of streams may be
lower than the requested number, depending on the amount
parallelism that is reasonable for the table. Error will be
returned if the max count is greater than the current system
max limit of 1,000. Streams must be read starting from offset
0.
