human
1. b Wrap data transform in a class deriving from VertaModelBase"
Please write code following the instructions in jupyter notebook style.
assistant
#Here is code to 1.

from verta.registry import VertaModelBase
class CubicFunction(VertaModelBase):
    def __init__(self, artifacts=None):
        pass
    
    def predict(self, input_data):
        output_data = []
        for input_data_point in input_data:
            output_data_point = cubic_transform(input_data_point)
            output_data.append(output_data_point)
        return output_data