MustTemplate() *param.Template

	// YAML reads the yaml from this Source. If this source contains parameters,
	// it is evaluated as a template.
	YAML() (string, error)

	// YAMLOrFail calls GetYAML and fails if an error occurs.
	YAMLOrFail(t test.Failer) string

	// MustYAML calls GetYAML and panics if an error occurs.
	MustYAML() string

	// Split this source into individual CRDs.
	Split() ([]Source, error)

	b.checkMissing(s)

	// Get the namespace where the config should be applied.
	ns := b.getNamespace(s)

	// Generate the YAML and add it to the configuration.
	b.out.YAML(ns.Name(), s.YAMLOrFail(b.t))
	b.yamlCount++
}

func withParams(s Source, params param.Params) Source {
	return s.WithParams(s.Params().SetAllNoOverwrite(params))
}

func (b *Builder) checkMissing(s Source) {
	b.t.Helper()