Package method for checking version addded
IDEA-121834 (generic exception substituted)
Cleanup (pointless exceptions; formatting; nullability)
java: "wrap return value" bean formatting fixed
IDEA-104026 (Java type annotation formatting)
IDEA-54396 (type annotations in "Wrap Return Value")
IDEA-54397 (type annotations in override/implement)
Cleanup (formatting; javadoc)
refactoring - following CR-IC-4721
Package method for checking version added
Merge remote-tracking branch 'origin/master'
[log] IDEA-121992 Recalculate old heads values

The VcsLogBranchFilter used to store precalculated values of commit
indices of its heads.
However, is it likely that after refresh these values change
=> setFilter will get either non-head commits, or even invalid (if
head commit was rebased/amended).

Don't precalculate these values, perform calculation each time, which
is fast because there are not too many head ref in the filter
(usually 0, 1 or 2).