allow to force static casts when requesting properties

6 jobs for v2beta
Status Name Job ID Coverage
  Test
passed clang-c++11 #1388
Linux

00:02:03

passed clang-c++98 #1390
Linux

00:01:43

passed gcc-c++11 #1387
Linux

00:02:46

passed gcc-c++98 #1389
Linux

00:02:40

passed macos-c++11 #1391
Apple

00:01:23

passed macos-c++98 #1392
Apple

00:01:20