class_docstr: Class for storing a causal estimand, typically as a result of the identification step.
docstr: Return a list containing the instrumental variables (if present)
docstr_tok: ["Return","a","list","containing","the","instrumental","variables","(","if","present",")"]
code: def get_instrumental_variables(self):
      """Return a list containing the instrumental variables (if present)"""
      return self.instrumental_variables
  
file_path: dowhy/dowhy/causal_identifier/identified_estimand.py
imports: import copy
  from typing import List, Optional
  import sympy
  from dowhy.utils.api import parse_state
label_desc: Use image node_id 7 for calling the IdentifiedEstimand obj's underlying member method code with example usage: obj.get_instrumental_variables() and returns: self