code: func (o *Strategy) SetFallbackToOnDemand(v *bool) *Strategy {
  	if o.FallbackToOnDemand = v; o.FallbackToOnDemand == nil {
  		o.nullFields = append(o.nullFields, "FallbackToOnDemand")
  	}
  	return o
  }
docs: // SetFallbackToOnDemand sets the option to fallback to on demand instances if preemptible instances arent available