code: def expected_dim(self):
      if len(self.shape) == 1:
          return 1
      return self.shape[1]
  
file_path: autokeras/autokeras/analysers/output_analysers.py
imports: import numpy
  from autokeras.engine import analyser
label_desc: Use image node_id 3 for calling the RegressionAnalyser obj's underlying member method code with example usage: obj.expected_dim() and returns: self, int