class_docstr: Composes multiple transforms in a chain.
class_docstr_tok: ["Composes","multiple","transforms","in","a","chain","."]
code: def sign(self):
      sign = 1
      for p in self._parts:
          sign = sign * p.sign
      return sign
  
imports: import weakref
  from ..distributions.utils import _clip_prob, cached_property, sum_right_most
  from ...block import HybridBlock
  from ....None import np, npx
label_desc: Use image node_id 3 for calling the ComposeTransform obj's underlying member method code with example usage: obj.sign() and returns: sign