class Grape::API::Instance

def cascade?

X-Cascade. Default :cascade is true.
errors from reaching upstream. This is effectivelly done by unsetting
In some applications (e.g. mounting grape on rails), one might need to trap

looking for a matching route on other resources.
and sets it to 'pass', indicating to grape's parents they should keep
route. In this case, Grape::Router adds a X-Cascade header to the response
Some requests may return a HTTP 404 error if grape cannot find a matching 
def cascade?
  return self.class.namespace_inheritable(:cascade) if self.class.inheritable_setting.namespace_inheritable.key?(:cascade)
  return self.class.namespace_inheritable(:version_options)[:cascade] if self.class.namespace_inheritable(:version_options)&.key?(:cascade)
  true
end