code: func (o *LaunchSpecification) SetShutdownScript(v *string) *LaunchSpecification {
  	if o.ShutdownScript = v; o.ShutdownScript == nil {
  		o.nullFields = append(o.nullFields, "ShutdownScript")
  	}
  	return o
  }
docs: // SetShutdownScript sets the shutdown script used when draining instances