Hydra 5 Missing uHYCLRManagedPluginWrappers.pas?

With Hydra 4, I previously referenced uHYCLRManagedPluginWrappers to find the parent for a THYPluginPanel, but it doesn’t appear to exist in Hydra 5. For example: if (Target is THYPluginPanel) then (Target as THYPluginPanel).Parent...;. How can I do the same thing in Hydra 5?

The .dproj files for Hydra 5 still have this reference, but the file doesn’t exist:

<DCCReference Include="uHYCLRManagedPluginWrappers.pas"/>

you can use uHYVCLCrossPlatformPanel.pas unit and THYVCLCrossPlatformPanel class