bool IOExists (  ) 

Description:
IOExists checks for Digital/Analog In/Out on the Node to confirm that it is in fact an IO node.
Returns:
(bool) True if the NODE contains IO, False if it does NOT.
Sample Code:
  // -- C++ -- //
  if (anIOobject->IOExists())
  { 
    printf("Test Passed: anIOobject is in fact an IO Object.\n"); 
  }
  else
  { 
    printf("Test Failed: anIOobject does NOT contain any digital or analog IO."); 
  }
  // -- C# -- //
  if (anIOobject.IOExists())
    Console.Writeline("Test Passed: anIOobject is in fact an IO Object.");
  else
    Console.Writeline("Test Failed: anIOobject does NOT contain any digital or analog IO.");
Notes:
A basic Slice IO module without any IO modules attached will return FALSE until a Digital/Analog In/Out slice is attached.
Examples:
SliceIO.cs.