Unboxing a possibly null value.

Cannot convert null literal to non-nullable reference type.

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

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

Possible null reference assignment.

Possible null reference assignment.

Possible null reference assignment.

Dereference of a possibly null reference.

Cannot convert null literal to non-nullable reference type.