Create multipart/alternative MIME

Demonstrates how to create a multipart/alternative MIME structure using the NewMultipartAlternative method.
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    success := false

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // Start with an empty MIME object...
    mime := chilkat.NewMime()

    // Initialize it as multipart/alternative.
    mime.NewMultipartAlternative()

    // Create a text/plain part.
    ptMime := chilkat.NewMime()
    ptMime.SetBodyFromPlainText("This is the plain text body.")
    fmt.Println(*ptMime.GetMime())
    fmt.Println("****")

    // The text/plain part looks like this:

    // 	Content-Type: text/plain
    // 	Content-Transfer-Encoding: 7bit
    // 
    // 	This is the plain text body.

    // Create a text/HTML part.
    htmlMime := chilkat.NewMime()
    htmlMime.SetBodyFromHtml("<html><body><p>This is the <b>HTML body</b></p></body></html>")
    fmt.Println(*htmlMime.GetMime())
    fmt.Println("****")

    // The text/html part looks like this:

    // 	Content-Type: text/html
    // 	Content-Transfer-Encoding: 7bit
    // 
    // 	<html><body><p>This is the <b>HTML body</b></p></body></html>

    // Add both parts as children of the multipart/alternative
    mime.AppendPart(ptMime)
    mime.AppendPart(htmlMime)
    fmt.Println(*mime.GetMime())

    // This the result.  The boundary string was automatically generaetd.

    // 	Content-Type: multipart/alternative; boundary="------------080803090906030708030908"
    // 
    // 	--------------080803090906030708030908
    // 	Content-Type: text/plain
    // 	Content-Transfer-Encoding: 7bit
    // 
    // 	This is the plain text body.
    // 	--------------080803090906030708030908
    // 	Content-Type: text/html
    // 	Content-Transfer-Encoding: 7bit
    // 
    // 	<html><body><p>This is the <b>HTML body</b></p></body></html>
    // 	--------------080803090906030708030908--

    mime.DisposeMime()
    ptMime.DisposeMime()
    htmlMime.DisposeMime()