flat
Uses parametersAsDoubles to get a map of map, then flattens the map to a single map with the key as the concatenated key of the outer and inner keys concatenated with the supplied character string. The combined key needs to be unique and not be present within the random variable names.
Return
the flattened map
Parameters
con
the char to form the common key
Uses parametersAsDoubles to get a map of map, then flattens the map to a single map with the key as the concatenated key of the outer and inner keys concatenated with the current value of the rvParamConCatString character string, which is "." by default.
The combined key needs to be unique and not be present within the random variable names.
Return
the flattened map