Missing definition of UnsupportedError

[iongion]

I think there is missing class definition for UnsupportedError.
I was not able to find where UnsupportedError is defined as it is raised in:

• lib/alf/sequel/unit_of_work/update.rb
• lib/alf/sequel/unit_of_work/insert.rb

But did not find it in any of the git submodules starting from 0.14 to current
My resolution was adding it as this:

module Alf
  module Sequel
    module UnitOfWork
      class UnsupportedError < StandardError
      end
    end
  end
end