Subclasses can override any of the available virtual methods or not, as
needed. At minimum either transform or transform_ip need to be overridden.
If the element can overwrite the input data with the results (data is of the
same type and quantity) it should provide transform_ip.
Subclasses can override any of the available virtual methods or not, as needed. At minimum either
transformortransform_ipneed to be overridden. If the element can overwrite the input data with the results (data is of the same type and quantity) it should providetransform_ip.