(Swift 3,4,5...) Load ucs2 XML File (utf-16)

Demonstrates how to load a ucs2 (utf-16 little-endian) XML file into Chilkat XML.

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func chilkatTest() {
    // If the XML file specifies the encoding in the XML declaration, such as:
    // <?xml version = "1.0" encoding = "UTF-16" standalone = "no" ?>
    // Then it's simply a matter of calling LoadXmlFile.
    // Chilkat will automatically read the XML declaration and will
    // process the file correctly.   For example:

    let xml = CkoXml()!
    var success: Bool = xml.loadFile("qa_data/xml/sample_ucs2.xml")

    // If, however, there is no XML declaration to indicate the character encoding,
    // then you must explicitly read the file according to what you know
    // is the correct encoding.  For example:
    let sb = CkoStringBuilder()!
    success = sb.loadFile("qa_data/xml/sample_ucs2.xml", charset: "utf-16")
    // Assuming success...
    success = xml.loadSb(sb, autoTrim: true)

    // To convert to the XML from utf-16 to utf-8, do the following:
    xml.encoding = "utf-8"
    print("\(xml.getXml()!)")
    success = xml.save("qa_output/sample_utf8.xml")

}