class_docstr: A simple counter
docstr: Args:
      v(float or np.ndarray): has to be the same shape between calls.
code: def feed(self, v):
      """
      Args:
          v(float or np.ndarray): has to be the same shape between calls.
      """
      self._values.append(v)
  
imports: import numpy
label_desc: Use image node_id 2 for calling the StatCounter obj's underlying member method code with example usage: obj.feed(v) without return types