/**
* Returns the result of substituting the variables defined by the fields of this class (a
* concrete subclass of TemplateVars) into the template returned by {@link #parsedTemplate()}.
*/
String toText() {
VelocityContext velocityContext = toVelocityContext();
StringWriter writer = new StringWriter();
SimpleNode parsedTemplate = parsedTemplate();
boolean rendered =
velocityRuntimeInstance.render(
velocityContext, writer, parsedTemplate.getTemplateName(), parsedTemplate);
if (!rendered) {
// I don't know when this happens. Usually you get an exception during rendering.
throw new IllegalArgumentException("Template rendering failed");
}
return writer.toString();
}
