code: def transform(self, input_array: np.ndarray):
      result = np.power(input_array, self.power)
      return result
  
imports: import logging
  import numpy
  import pytest
  from popmon.base import Module, Pipeline
label_desc: Use image node_id 2 for calling the PowerTransformer obj's underlying member method code with example usage: obj.transform(input_array) and returns: result