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

	// SplitOrFail calls Split and fails if an error occurs.
	SplitOrFail(t test.Failer) []Source

	// MustSplit calls Split and panics if an error occurs.
	MustSplit() []Source

	// Params returns a copy of the parameters for this Source.
	Params() param.Params

	// WithParams creates a new Source with the given template parameters.