vertx / io.vertx.reactivex.ext.web.api.contract.openapi3 / OpenAPI3RouterFactory / createRouterFactoryFromFile

# createRouterFactoryFromFile

`open static fun createRouterFactoryFromFile(vertx: Vertx, filename: String, handler: Handler<AsyncResult<OpenAPI3RouterFactory>>): Unit`

Create a new OpenAPI3RouterFactory from a filename

### Parameters

`vertx` -

`filename` -

`handler` - When specification is loaded, this handler will be called with AsyncResult