I'm running the

migrate

tool, and I get the following warning:

Note for checkstyle in section [compile.checkstyle]: JVM tool classpath spec overrides have migrated from a list of targetaddresses to a single target address.  To migrate a list of addresses you'll need to create a new aggregator target to hold the list like so: `target(name=<your choice>, dependencies=[<list of addresses>])` and then point to its single address.