Field 'MetadataTypeName.m_shortName' is never assigned to, and will always have its default value null

Possible null reference assignment.

Non-nullable field 'm_shortName' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the field as nullable.

Possible null reference argument for parameter 'y' in 'bool IEqualityComparer<DiagnosticIdentifier>.Equals(DiagnosticIdentifier x, DiagnosticIdentifier y)'.

Field 'MetadataTypeName.m_shortName' is never assigned to, and will always have its default value null

Possible null reference assignment.

Non-nullable field 'm_shortName' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the field as nullable.