code: def forward(self, x):
      if self.hidden_cell is None:
          raise Exception
      x = self.conv_block1(x)
      x = self.conv_block2(x)
      x = x.permute(2, 0, 1)
      out, self.hidden_cell = self.gru(x, self.hidden_cell)
      predictions = self.linear(self.hidden_cell)
  
      return predictions
  
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 4 for calling the CGRUNetwork obj's underlying member method code with example usage: obj.forward(x) and returns: predictions