* Fix TestBench API imports, move functionality from custom elements
* Fixes to TestBench APIs and JavaDocs
* Merge remote-tracking branch 'origin/master' into 578_tbapi_cleanup
* Fix method name in CheckBoxGroupTest
* Remove unused custom element classes
* Implement getOptions using getOptionElements
* Replace setValue with setSelection in CheckBoxGroupElement
* Rename CheckBoxGroupElement getSelection to getValue
* Fix one last method
Fix item caption generators in RadioButton/CheckBoxGroup
This patch corrects the behavior of setting caption generators
that may return null.
Additionally renames RadioButtonGroup's ItemIconProviders to
generators, unifying it with other select components.
Change-Id: I5e8491834dccce1c37ab9c2002acc475e8945f4b
This patch adds multi selection support only for CheckBoxGroup without
even trying to generalize anything. Adopting the concepts to work with
other components will be done separately.
Change-Id: Id4ccd2c743b74cb022dc9dfd8cd8dae3bf8f0c54