deployment

type Builder interface {
	// With adds a new Echo configuration to the Builder. Once built, the instance
	// pointer will be updated to point at the new Instance.
	With(i *echo.Instance, cfg echo.Config) Builder

	// WithConfig mimics the behavior of With, but does not allow passing a reference
	// and returns an echoboot builder rather than a generic echo builder.
	// TODO rename this to With, and the old method to WithInstance
	WithConfig(cfg echo.Config) Builder

	// WithClusters will cause subsequent With or WithConfig calls to be applied to the given clusters.
	WithClusters(...cluster.Cluster) Builder

	// Build and initialize all Echo Instances. Upon returning, the Instance pointers
	// are assigned and all Instances are ready to communicate with each other.
	Build() (echo.Instances, error)
	BuildOrFail(t test.Failer) echo.Instances
}