VB conversion error

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[DevExpressExampleBot]

Please correct the project and update this pull request by pushing a new commit.

[BUILDING ERROR]
   OUTPUT: vbc : warning BC40057: Namespace or type specified in the project-level Imports 'System.Xml.Linq' doesn't contain any public member or cannot be found. Make sure the namespace or the type is defined and contains at least one public member. Make sure the imported element name doesn't use any aliases. [R:\Temp\8b615548-fce0-4ed8-b575-7266a8c1136e\tempTestingVB\NonPersistentObjectsDemo.Module\NonPersistentObjectsDemo.Module.vbproj]
R:\Temp\8b615548-fce0-4ed8-b575-7266a8c1136e\tempTestingVB\NonPersistentObjectsDemo.Module\BusinessObjects\Article.vb(14,29): error BC30451: 'Title' is not declared. It may be inaccessible due to its protection level. [R:\Temp\8b615548-fce0-4ed8-b575-7266a8c1136e\tempTestingVB\NonPersistentObjectsDemo.Module\NonPersistentObjectsDemo.Module.vbproj]
R:\Temp\8b615548-fce0-4ed8-b575-7266a8c1136e\tempTestingVB\NonPersistentObjectsDemo.Module\BusinessObjects\Contact.vb(16,29): error BC30451: 'FullName' is not declared. It may be inaccessible due to its protection level. [R:\Temp\8b615548-fce0-4ed8-b575-7266a8c1136e\tempTestingVB\NonPersistentObjectsDemo.Module\NonPersistentObjectsDemo.Module.vbproj]
R:\Temp\8b615548-fce0-4ed8-b575-7266a8c1136e\tempTestingVB\NonPersistentObjectsDemo.Module\BusinessObjects\NonPersistentObjectBase.vb(14,44): error BC30149: Class 'NonPersistentObjectBase' must implement 'Property ObjectSpace As IObjectSpace' for interface 'IObjectSpaceLink'. [R:\Temp\8b615548-fce0-4ed8-b575-7266a8c1136e\tempTestingVB\NonPersistentObjectsDemo.Module\NonPersistentObjectsDemo.Module.vbproj]

https://codecentralfarm.devexpress.devx/job/XAF_Non-Persistent-Objects-Filtering-Demo_20.1.2+/6/console