def import_before base
      import_instance_variable(:before_all, base)
      base.before?.each {|(m,p)| self.before(m, &p)}
    end
def import_before base
      import_instance_variable(:before_all, base)
      base.before?.each {|(m,p)| self.before(m, &p)}
    end
import `:before` and `:before_all` hooks from base