jdbc targetServerType=slave with readonly connection

Sample conn str

<entry key="jdbc.url.readonly">jdbc:postgresql://master,slave/up?user=***&password=***&sslmode=require&ApplicationName=***&targetServerType=preferSlave&loadBalanceHosts=true&readOnly=true</entry>

From the docs I understands that since writes are not allowed in RO transactions, the jdbc driver thinks it is connected to a slave. I think the master/slave check should be corrected, or configurable.

Thank you

Vladimir