Issue #63: Implement pickable (mandatory) property for surface models and add tests.

7 jobs for 63-new-pickable-property in 14 minutes and 9 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #14329
gui shared-linux
build docs

00:01:11

passed #14330
gui shared-linux
build linux installer

00:01:02

passed #14331
gui shared-mac
build mac installer

00:00:40

passed #14332
gui shared-win
build windows installer

00:06:53

 
  Test
passed #14333
gui shared-linux
test Linux

00:02:25

93.0%
passed #14334
gui shared-mac
test macOS

00:01:23

passed #14335
gui shared-win
test Windows

00:07:13