Three-state policy flag: 'required', 'disallowed', or 'optional'. Used by machine configuration where a default-permissive middle ground is meaningful (for example, the actions config key).
'required'
'disallowed'
'optional'
actions
Three-state policy flag:
'required','disallowed', or'optional'. Used by machine configuration where a default-permissive middle ground is meaningful (for example, theactionsconfig key).