code: def get(self):
      return self._placeholder
  
file_path: baselines/baselines/deepq/utils.py
imports: from baselines.common.input import observation_input
  from baselines.common.tf_util import adjust_shape
label_desc: Use image node_id 2 for calling the PlaceholderTfInput obj's underlying member method code with example usage: obj.get() and returns: self