- `enumeration (OBJ)`
- `enumeration (CLASSNAME)`
- `NAMES = enumeration (...)`

List the enumeration members defined by the class of `OBJ` or by the class
named by `CLASSNAME`.

When called with no output argument, display the enumeration member names.
Otherwise, return the names in a cell array.

See also: `class`, `metaclass`.

### References

- https://www.mathworks.com/help/matlab/ref/enumeration.html
- https://octave.sourceforge.io/octave/function/enumeration.html