import ( "github.com/tsuru/tsuru/service" ) func createNewInstance(instanceName string, planName string) error { _, err := service.ServiceInstance.Create(instanceName, planName) if err != nil { return err } return nil }In this example, we import the service package from the tsuru library and use the ServiceInstance Create function to create a new service instance with the given instance name and plan name. If an error occurs during the creation process, it is returned as an error value. In summary, the github.com.tsuru.tsuru.service package library provides functionality for managing services in the Tsuru platform, and the ServiceInstance Create function allows you to create new service instances with ease.