class_docstr: `AgentBase` is the base class of the `parl.Agent` in different frameworks.
  
  `parl.Agent` is responsible for the general data flow outside the algorithm.
docstr: Predict the action when given the observation of the environment.
  
  In general, this function is used in test process.
  
  This function will usually do the following things:
     1. Accept numpy data as input;
     2. Feed numpy data or onvert numpy data to tensor (optional);
     3. Call predict function in `Algorithm`.
code: def predict(self, *args, **kwargs):
      """Predict the action when given the observation of the environment.
  
      In general, this function is used in test process.
  
      This function will usually do the following things:
         1. Accept numpy data as input;
         2. Feed numpy data or onvert numpy data to tensor (optional);
         3. Call predict function in `Algorithm`.
      """
      raise NotImplementedError
  
file_path: PARL/parl/core/agent_base.py
label_desc: Use image node_id 5 for calling the AgentBase obj's underlying member method code with example usage: obj.predict() without return types