happens first. userProperties ARRAY [0..(MQTTParam.g_udiMaxUser [...] )] OF MQTTStringPair User
_EngineId Create an user with the functions CreateUser [...] Write The user must be created
gives a user [...] shall be used here. pUser [...] from the user application
(function) pUser [...] to user parameter
.ICredentialsProvider, IDatasources.ICredentialsUser [...] GetCredentials (Method) ICredentialsUser
VisuName (Property) UserGroupId (Property) User
ISO8327_ConnectionIdent (Struct) tyISO8650_User [...] ISO8823_ContextName (Struct) tyISO8823_DataUser
should only contain the user token [...] or to retrieve user tokes
