HttpBasic authentication

This is the most straightforward method and the easiest. With this method, the sender places a username:password into the request header. The username and password are encoded with Base64, which is an encoding technique that converts the username and password into a set of 64 characters to ensure safe transmission.

Parameter	Description
`username`	The user name. This can also be supplied by the credential supplier.
`password`	The password. This can be provided by the credential supplier.
`method`	The method is always `HttpBasic`