21 duplicated lines in:
  - 2021.2/CSharp20212/NullableReferenceTypes/ChangeNullability.cs (13:55, 80%)
  - 2021.3/CS10/Namespaces/BlockScoped/BlockScopedNamespace.cs (12:50, 84%)

21 duplicated lines in:
  - 2021.2/CSharp20212/NullableReferenceTypes/ChangeNullability.cs (13:55, 80%)
  - 2021.3/CS10/Namespaces/FileScoped/FileScopedNamespace.cs (13:51, 84%)