code: def _scale(self, array: np.ndarray):
      return (array - self.mu) / (self.std + 1e-6)
  
imports: import numpy
  from golem.utilities.requirements_notificator import warn_requirement
  from fedot.core.data.data import InputData
  from fedot.core.operations.evaluation.operation_implementations.implementation_interfaces import ModelImplementation
  from fedot.core.operations.operation_parameters import OperationParameters
  from fedot.core.repository.dataset_types import DataTypesEnum
label_desc: Use image node_id 11 for calling the CGRUImplementation obj's underlying member method code with example usage: obj._scale(array) and returns: unknown