function get() {
	/* eslint-disable no-invalid-this, stdlib/empty-line-before-comment */
	var f = line()
		.x( this.xPos )
		.y( this.yPos )
		.defined( this.isDefined );
		// TODO: interpolate (curve factory)
		// TODO: tension

	return f;
}
Returns a function to generate a line as an SVG path.

@private
@returns {Function} function to generate a line as an SVG path