solidus preferences not included to configuration

[Rtwena]

It seems that SolidusPaypalBraintree::Configuration does have preferences

I'm running solidus without solidus-frontend (not sure if that matters)

[2] pry(main)> >> SolidusPaypalBraintree::Configuration.last.save!
NameError: undefined local variable or method `preferences' for #<SolidusPaypalBraintree::Configuration:0x00005582afe20748>
Did you mean?  preference_type
from /usr/share/rvm/gems/ruby-2.5.3/gems/activemodel-6.0.2.2/lib/active_model/attribute_methods.rb:431:in `method_missing'

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.