docstr: Returns:
      A generated cluster unique Id created from cluster mentions ids
docstr_tok: ["Returns",":","A","generated","cluster","unique","Id","created","from","cluster","mentions","ids"]
code: def get_cluster_id(self) -> str:
      """
      Returns:
          A generated cluster unique Id created from cluster mentions ids
      """
      return "$".join([mention.mention_id for mention in self.mentions])
  
file_path: nlp-architect/nlp_architect/common/cdc/cluster.py
imports: from typing import List
  from nlp_architect.common.cdc.mention_data import MentionData
label_desc: Use image node_id 5 for calling the Cluster obj's underlying member method code with example usage: obj.get_cluster_id() and returns: str