Is there any documentation around this PyMysql/Mysql behavior?

Question

This is the pymysql code I am using to connect to the database. I am testing with an AWS RDS Mysql instance with Mysql verison 5.7.22. I am getting the certificate from https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/UsingWithRDS.SSL.html

pymysql.connect(secret_dict['host'], user=secret_dict['username'],
    passwd=secret_dict['password'], port=port, db=dbname, 
    connect_timeout=5, ssl={'ca': './rds-combined-ca-bundle.pem'})

This code works with my test database with the user with ssl enabled and the user wo ssl enabled. - (Via ALTER USER 'encrypted_user'@'%' REQUIRE SSL; )

My question is is this pymysql behavior that I am seeing true of any MySQL verison database or documented anywhere? The behavior I am referring to is that if you add the ssl option to the connect call, it should work (successful connection) regardless or not the actual user has SSL required on it. I prefer not to test with every Mysql version :)

From taking a look at the pymysql code, what it seems to do is check if there are any ssl parameters associated with the request, adds it to an ssl map, and then creates a ctx_object from that ssl map and uses that ctx_ object when initializing a socket with the database.