class_docstr: Additive combination of two objectives (specification key: `plus`).
  
  Args:
      objective1 (specification): First objective configuration
          (<span style="color:#C00000"><b>required</b></span>).
      objective2 (specification): Second objective configuration
          (<span style="color:#C00000"><b>required</b></span>).
      name (string): <span style="color:#0000C0"><b>internal use</b></span>.
      states_spec (specification): <span style="color:#0000C0"><b>internal use</b></span>.
      internals_spec (specification): <span style="color:#0000C0"><b>internal use</b></span>.
      auxiliaries_spec (specification): <span style="color:#0000C0"><b>internal use</b></span>.
      actions_spec (specification): <span style="color:#0000C0"><b>internal use</b></span>.
      reward_spec (specification): <span style="color:#0000C0"><b>internal use</b></span>.
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code: def required_baseline_fns(self):
      return (
          self.objective1.required_baseline_fns()
          + self.objective2.required_baseline_fns()
      )
  
file_path: tensorforce/tensorforce/core/objectives/plus.py
imports: import tensorflow
  from tensorforce import util
  import tensorforce.core
  from tensorforce.core import TensorSpec, tf_function, tf_util
  from tensorforce.core.objectives import Objective
label_desc: Use image node_id 4 for calling the Plus obj's underlying member method code with example usage: obj.required_baseline_fns() and returns: unknown