OutputVar := instance.GetValue(index)
Gets the value of a item in the class for given index.
index
The zero-Based index to get the element value from
If index item is non-object then retruns item for the current index value.
If index item is Derived from MfPrimitive then returns Value property for the MfPrimitive derived class.
if index item is Derived from MfObject then returns objects ToString() method value.
Non-MfObject objects are returned as is.
Return value is always a var and never an object.
Throws MfNullReferenceException if MfParams is not an instance.
Throws MfArgumentOutOfRangeException if index is less than zero or index is equal to or greater than Count
Throws MfArgumentException if index is not a valid MfInteger instance or valid var containing Integer