I get in my program an unexpected ConcurrentModificationException. The stacktrace for this exception, points to line 258 of the  file - but the file has only 257 lines!  I have recompiled the file with same result.  The error happens inside a forEach{} loop, and inside that loop are some calls to inline functions that I didn’t use before: checkNotNull().  Could this somehow upset the line count?? The previous line in the stacktrace is exactly where it should be, calling the function named in the...