How can you add a GuidedStepSupportFragment on a VerticalGridSupportFragment

I am using this line in a VerticalGridSupportFragment (or a BrowseSupportFragment)

`GuidedStepSupportFragment.add(childFragmentManager, ProductQuantityGuideFragment())
`
where ProductQuantityGuideFragment is a GuidedStepSupportFragment

but it looks for a framelayout with the id "content" in the parent fragment.
Can you make a custom layout for VerticalGridSupportFragment (or a BrowseSupportFragment) ? (and add a "content" framelayout there)

Start at GuidedStepSupportFragment.add(childFragmentManager, ProductQuantityGuideFragment()) and trace how it locates the parent content view when used from VerticalGridSupportFragment or BrowseSupportFragment. Review the fragment layouts and determine whether a custom layout can provide the required content frame; done means the guided step can be added without the missing-id failure.

Written by the indexing model from the issue text.