public String getScope() throws GuacamoleException {
        return environment.getProperty(OPENID_SCOPE, DEFAULT_SCOPE);
    }
Returns the space-separated list of OpenID scopes to request. By default,
this will be "openid email profile". The OpenID scopes determine the
information returned within the OpenID token, and thus affect what
values can be used as an authenticated user's username.

@return
    The space-separated list of OpenID scopes to request when identifying
    a user.

@throws GuacamoleException
    If guacamole.properties cannot be parsed.
extensions/guacamole-auth-sso/modules/guacamole-auth-sso-openid/src/main/java/org/apache/guacamole/auth/openid/conf/ConfigurationService.java