code: def __str__(self):
      args = [f"groups: {self.groups}"]
      return self.make_str(args)
  
imports: import numpy
  import formulae.terms
  from bambi.terms.base import BaseTerm, VALID_PRIORS
  from bambi.priors.prior import Prior
label_desc: Use image node_id 20 for calling the GroupSpecificTerm obj's underlying member method code with example usage: obj.__str__() and returns: self