Prado\Xml\TXmlElement::setValue PHP Method

    public function setValue($value)
    {
        $this->_value = TPropertyValue::ensureString($value);
    }

 public function testToString()
 {
     $element = new TXmlElement('tag');
     self::assertEquals('<tag />', (string) $element);
     $element->setAttribute('key', 'value');
     self::assertEquals('<tag key="value" />', (string) $element);
     $element->setValue('value');
     self::assertEquals('<tag key="value">value</tag>', (string) $element);
 }