Add eventual consistency example. (#3976)
Add eventual consistency example. (#3976)

Co-authored-by: BenWhitehead <6e442f8aef2389ef8b365869b3f123696bedec26@users.noreply.github.com>
GoogleCloudPlatform/python-docs-samples,GoogleCloudPlatform/python-docs-samples,GoogleCloudPlatform/python-docs-samples,GoogleCloudPlatform/python-docs-samples