Annotate methods that return a definitely null value with @Nullable We intend to enable the ReturnMissingNullable errorprone pattern in Gerrit core and this fixes the current issues. Signed-off-by: Edwin Kempin <ekempin@google.com> Change-Id: I077ad0ddfa8ce0c07dc08cc1e4414e35830cd843
All documentation may be found under src/main/resources/Documentation/.