# File lib/declarative_authorization/rails_legacy.rb, line 6
    def deep_merge(other_hash)
      self.merge(other_hash) do |key, oldval, newval|
        oldval = oldval.to_hash if oldval.respond_to?(:to_hash)
        newval = newval.to_hash if newval.respond_to?(:to_hash)
        oldval.class.to_s == 'Hash' && newval.class.to_s == 'Hash' ? oldval.deep_merge(newval) : newval
      end
    end