grammar, possibly misleading about reference HOT 3 OPEN

For 2: Each variant of an enum has it's own constructor. None of these may have any fields for the enum as a whole to be called a field-less enum.

from reference.

Sir bjorn3, Thank you for pointing out the inexactness my suggestion. I stand corrected. But I humbly feel "Each variant of an enum has it's own constructor" is suspicious.
This may do better:
For 2 If every variant of an enum that has a constructor has no field in the constructor, then the enum is called a field-less enum.

from reference.

@bjorn3 As a non-native speaker I agree with @Velumuthali on his/her suggestion.

from reference.