Whether project-level auto-merge settings restrict repository-level overrides.
'NONE'
'RESTRICTED_MODIFIABLE'
'RESTRICTED_UNMODIFIABLE'
Whether project-level auto-merge settings restrict repository-level overrides.
'NONE'— repositories may override the project setting'RESTRICTED_MODIFIABLE'— restricted, but the caller may lift the restriction'RESTRICTED_UNMODIFIABLE'— restricted by a higher scope the caller cannot change