// retoor <retoor@molodetz.nl>
import "html" for Document
var doc = Document.parse("<div id='container'>Text content</div>")
var container = doc.getElementById("container")
System.print(container.textContent.contains("Text content")) // expect: true
var textNodes = container.childNodes
System.print(textNodes.count >= 1) // expect: true
var text = doc.createTextNode("Extra text")
container.appendChild(text)
var before = container.childNodes.count
text.remove()
var after = container.childNodes.count
System.print(after < before) // expect: true