code: def __repr__(self):
      s = f"UCM: {self.ucm:6.2%} LCM: {self.lcm:6.2%} "
      s += f"UAS: {self.uas:6.2%} LAS: {self.las:6.2%}"
      return s
  
imports: from collections import Counter
label_desc: Use image node_id 2 for calling the AttachmentMetric obj's underlying member method code with example usage: obj.__repr__() and returns: s