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

The variable 'initialized' is assigned but its value is never used

The variable 'shutdown' is assigned but its value is never used

Parameter 'output' is unread.

Dereference of a possibly null reference.

Dereference of a possibly null reference.

Dereference of a possibly null reference.

Parameter 'output' is unread.

Dereference of a possibly null reference.

Dereference of a possibly null reference.

The type 'T?' cannot be used as type parameter 'T' in the generic type or method 'TreeView<T>'. Nullability of type argument 'T?' doesn't match 'class' constraint.

The type 'T?' cannot be used as type parameter 'T' in the generic type or method 'TreeView<T>'. Nullability of type argument 'T?' doesn't match 'class' constraint.

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

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

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

Possible null reference assignment.

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

Possible null reference assignment.

Possible null reference argument for parameter 'cki' in 'void EscSeqUtils.DecodeEscSeq(ref ConsoleKeyInfo newConsoleKeyInfo, ref ConsoleKey key, ConsoleKeyInfo[] cki, ref ConsoleModifiers mod, out string c1Control, out string code, out string[] values, out string terminator, out bool isMouse, out List<MouseFlags> buttonState, out Point pos, out bool isResponse, Action<MouseFlags, Point>? continuousButtonPressedHandler)'.