code example for read_rows() incorrect

[yan-hic]

The code snippet under read_rows() method at https://googleapis.dev/python/bigquerystorage/latest/gapic/v1/api.html does not work.

stream should be the name of the stream but even so, there is an error:

TypeError: Parameter to MergeFrom() must be instance of same class: expected google.cloud.bigquery.storage.v1.ReadSession got str.