Tests if the login with the saved username and password was sucessful
login_check(genesis = getOption("genesis"))Which GENESIS database should be used?
One of: "destatis", "regionalstatistik", "bildungsmonitoring", "bayern", "nrw", "sachsen-anhalt".
A default value can also be set to the global option genesis via
options(), e.g. options(genesis = "destatis"), so that genesis
does not have to be specified in the function call.