The function getParmValCPLEX retrieves the names and actual values
of all IBM ILOG CPLEX parameters, which do not have their default values.
getParmValCPLEX(env)An object of class "'>cplexPtr" as returned by
openEnvCPLEX. This is basically a pointer to an
IBM ILOG CPLEX environment.
Either a list containing all non-default parameters and their values or
NULL.
The IBM ILOG CPLEX home page at https://www.ibm.com/support/knowledgecenter/SSSA5P.