Method IsRoleNameAvailableAsync(string, IRedbRole?)
Check role name availability.
Task<bool> IsRoleNameAvailableAsync(string roleName, IRedbRole? excludeRole = null)Edit:
Props is null! editMember: null, Props: null
Check role name availability.
Task<bool> IsRoleNameAvailableAsync(string roleName, IRedbRole? excludeRole = null)