ExternalFileExtensionOpeningMenu - метод

public override Task OpeningMenu(
	IFileExtensionContext context
)

Public Overrides Function OpeningMenu ( 
	context As IFileExtensionContext
) As Task

public:
virtual Task^ OpeningMenu(
	IFileExtensionContext^ context
) override

abstract OpeningMenu : 
        context : IFileExtensionContext -> Task 
override OpeningMenu : 
        context : IFileExtensionContext -> Task