code: def build_program(self):
      self.predict_program = fluid.Program()
  
      with fluid.program_guard(self.predict_program):
          obs = layers.data(
              name="obs",
              shape=[self.config["obs_dim"]],
              dtype="float32",
          )
          self.predict_action = self.alg.predict(obs)
      self.predict_program = parl.compile(self.predict_program)
  
file_path: PARL/benchmark/fluid/ES/mujoco_agent.py
imports: import numpy
  import paddle.fluid
  import parl
  import utils
  from parl import layers
  from optimizers import Adam
label_desc: Use image node_id 2 for calling the MujocoAgent obj's underlying member method code with example usage: obj.build_program() without return types