This object contains template functions from the users stored user defined processes (UDP), which can be reused in other process graphs.
This object is an unlocked R6 object, that allows us to add new functions to this object at runtime. It is structured in the same way
as the ProcessCollection() for predefined processes by the openEO back-end. A UserProcessCollection() is usually created at
user_processes(). If you have submitted new user defined processes to the back-end, make sure to call user_processes() again
to fetch the latest status.
$new(con = NULL)The object creator created an openEO connection.
optional - an active and authenticated Connection (optional) otherwise active_connection()
is used.