'PortableExecutable' does not contain a definition for 'MatroschkaPackage' and no accessible extension method 'MatroschkaPackage' accepting a first argument of type 'PortableExecutable' could be found (are you missing a using directive or an assembly reference?)

'PortableExecutable' does not contain a definition for 'MatroschkaPackageFileData' and no accessible extension method 'MatroschkaPackageFileData' accepting a first argument of type 'PortableExecutable' could be found (are you missing a using directive or an assembly reference?)

'PortableExecutable' does not contain a definition for 'MatroschkaPackage' and no accessible extension method 'MatroschkaPackage' accepting a first argument of type 'PortableExecutable' could be found (are you missing a using directive or an assembly reference?)

'PortableExecutable' does not contain a definition for 'MatroschkaPackage' and no accessible extension method 'MatroschkaPackage' accepting a first argument of type 'PortableExecutable' could be found (are you missing a using directive or an assembly reference?)

'PortableExecutable' does not contain a definition for 'MatroschkaPackageFileData' and no accessible extension method 'MatroschkaPackageFileData' accepting a first argument of type 'PortableExecutable' could be found (are you missing a using directive or an assembly reference?)

'PortableExecutable' does not contain a definition for 'MatroschkaPackage' and no accessible extension method 'MatroschkaPackage' accepting a first argument of type 'PortableExecutable' could be found (are you missing a using directive or an assembly reference?)

'PortableExecutable' does not contain a definition for 'MatroschkaPackage' and no accessible extension method 'MatroschkaPackage' accepting a first argument of type 'PortableExecutable' could be found (are you missing a using directive or an assembly reference?)

'PortableExecutable' does not contain a definition for 'MatroschkaPackageFileData' and no accessible extension method 'MatroschkaPackageFileData' accepting a first argument of type 'PortableExecutable' could be found (are you missing a using directive or an assembly reference?)

'PortableExecutable' does not contain a definition for 'MatroschkaPackage' and no accessible extension method 'MatroschkaPackage' accepting a first argument of type 'PortableExecutable' could be found (are you missing a using directive or an assembly reference?)

'PortableExecutable' does not contain a definition for 'MatroschkaPackage' and no accessible extension method 'MatroschkaPackage' accepting a first argument of type 'PortableExecutable' could be found (are you missing a using directive or an assembly reference?)

Converting null literal or possible null value to non-nullable type.

Converting null literal or possible null value to non-nullable type.

Dereference of a possibly null reference.

Converting null literal or possible null value to non-nullable type.

Converting null literal or possible null value to non-nullable type.

Converting null literal or possible null value to non-nullable type.

Converting null literal or possible null value to non-nullable type.

Converting null literal or possible null value to non-nullable type.

Converting null literal or possible null value to non-nullable type.