Selecting last N elements from table rows that match given pattern

gistfile1.groovy

import org.jsoup.Jsoup
import org.jsoup.nodes.Document
import org.jsoup.nodes.Element
import org.jsoup.select.Elements

@Grab(group='org.jsoup', module='jsoup', version='1.8.1')

def html = '''
<table id="test">
    <tr>
        <td>ID: 2</td>
        <td>Name: Something</td>
    </tr>
    <tr>
        <td>ID: 3</td>
        <td>Name: Lorem</td>
    </tr>
    <tr>
        <td></td>
        <td>skip me</td>
    </tr>
    <tr>
        <td>ID: 4</td>
        <td>Name: Ipsum</td>
    </tr>
    <tr>
        <td>ID: 5</td>
        <td>Name: Dolor</td>
    </tr>
    <tr>
        <td>???</td>
        <td>skip me</td>
    </tr>
    <tr>
        <td></td>
        <td>skip me</td>
    </tr>
    <tr>
        <td>ID: 6</td>
        <td>Name: Sit</td>
    </tr>
</table>
'''

Document document = Jsoup.parse(html)

Elements elements = document.select('table#test tr:contains(ID)')

int numberOfLastElements = 3

List<Element> sublist = elements.subList(elements.size() - numberOfLastElements, elements.size())

assert sublist.every {
    ['ID: 4', 'ID: 5', 'ID: 6'].contains(it.select('td:first-child').html())
}