new PropertyFileDocumentModell(new Document());
new PropertyFileDocumentModell(props);
    public void testInsertIntoEmptyDoc() {                PropertyFileDocumentModell modell =             new PropertyFileDocumentModell(new Document());                InsertEdit insertEdit = modell.insert("key", "value");                assertEquals("key=value\n", insertEdit.getText());        assertEquals(0, insertEdit.getOffset());    }