The javadoc for StringBuilder.readObject uses "StringBuffer" where "StringBuilder" is meant.
Reported on core-libs:
https://mail.openjdk.java.net/pipermail/core-libs-dev/2021-September/081277.html
Reported on core-libs:
https://mail.openjdk.java.net/pipermail/core-libs-dev/2021-September/081277.html