@Override
    public String getIdentifier() {
        return "header";
    }
Creates a new HTTPHeaderAuthenticationProvider that authenticates users
using HTTP headers.

@throws GuacamoleException
    If a required property is missing, or an error occurs while parsing
    a property.
extensions/guacamole-auth-header/src/main/java/org/apache/guacamole/auth/header/HTTPHeaderAuthenticationProvider.java