@Test
public void prependTest() {

    final Expression expr = StaticJavaParser.parseExpression("getAddressName().startsWith(\"M\")");
    final NameExpr nameExpr = new NameExpr(THIS_PLACEHOLDER);
    final Expression concatenated = DrlxParseUtil.prepend(nameExpr, expr);
    assertEquals(THIS_PLACEHOLDER + ".getAddressName().startsWith(\"M\")", concatenated.toString());
}