class_docstr: A tuple of `InfDim`s.
  
  This is intended to be attached to each parameter tensor `p` as `p.infshape`.
code: def serialize(self):
      d = {"base_shape": [], "shape": []}
      for infdim in self:
          d["shape"].append(infdim.dim)
          d["base_shape"].append(infdim.base_dim)
      return d
  
imports: from copy import copy
label_desc: Use image node_id 9 for calling the InfShape obj's underlying member method code with example usage: obj.serialize() and returns: d