How to use Basic Authentication with HTTP client ?

How to use Basic Authentication when using the OpenEdge.Net.HTTP client ?
How to make sure HTTP requests made from ABL include "Authorization:" header ?

This is done by creating a Credentials object and adding that to the Request, using code similar to:

creds = new Credentials('<domain>', '<user name>', '<password>').

req = RequestBuilder:Get('<URI>')
        // Add credentials to the request
        :UsingBasicAuthentication(creds)
        :Request.

For more detailed code examples, refer to https://github.com/PeterJudge-PSC/http_samples/tree/master/http_client/http_authentication

References to Other Documentation:

Progress Article(s):
 Is there an HTTP client for OpenEdge?
 OpenEdge.Net.pl is missing from PROPATH
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