code: def join_train(self, inputs):
      self.results = [
          {
              "model_name": input.model_name,
              "preds": input.preds,
              "accuracy": input.accuracy,
          }
          for input in inputs
      ]
      self.next(self.end)
  
file_path: wandb/tests/functional_tests/t0_main/metaflow/wandb-foreach-flow.py
imports: import os
  import pandas
  from metaflow import FlowSpec, Parameter, step
  from sklearn.ensemble import GradientBoostingClassifier, RandomForestClassifier
  from sklearn.metrics import accuracy_score
  from sklearn.model_selection import train_test_split
  from wandb.integration.metaflow import wandb_log
label_desc: Use image node_id 4 for calling the WandbForeachFlow obj's underlying member method code with example usage: obj.join_train(inputs) without return types