Indicates if this object is still valid, i.e. hasn't been deleted or some other action done to invalidate the reference.
"cadMachineAvoidGroupsParameterValue_var" is a variable referencing a CadMachineAvoidGroupsParameterValue object. | 
        
"cadMachineAvoidGroupsParameterValue_var" is a variable referencing a CadMachineAvoidGroupsParameterValue object. |