in line with the until-now prevailing convention to throw an exception to terminate a tree scan early, ExpressionToTypeInfo.findExpressionPath calls a private PathFinder class that does just that.

Throwing an exception may be expensive.

There is a new improved paradigm to override the `scan` methods to simply terminate early when a condition has been met, without the need for an exception. It may be worth retrofitting this to this situation. See the fix for JDK-8267690