Low level interface function to the IBM ILOG CPLEX function
  CPXgetchannels.  Consult the IBM ILOG CPLEX documentation for
  more detailed information.
getChannelsCPLEX(env, ptrtype = "cplex_chan")An object of class "'>cplexPtr" as returned by
    openEnvCPLEX. This is basically a pointer to an
    IBM ILOG CPLEX environment.
A name for the pointer object.
If successful a list is returned:
address of the channel corresponding to cpxresults
address of the channel corresponding to cpxwarning
address of the channel corresponding to cpxerror
address of the channel corresponding to cpxlog
Interface to the C function getChannels which calls the CPLEX
  function CPXgetchannels.
The IBM ILOG CPLEX home page at https://www.ibm.com/support/knowledgecenter/SSSA5P.
disconnectChannelCPLEX, flushChannelCPLEX,
  flushStdChannelsCPLEX