code: def boosted_rounds(self):
      return self.num_boosted_rounds
  
file_path: ivy/ivy/functional/frontends/xgboost/gbm/gbm.py
imports: import ivy
  from ivy.functional.frontends.xgboost.objective.regression_loss import LogisticRegression
  from ivy.functional.frontends.xgboost.linear.updater_coordinate import coordinate_updater
  from copy import deepcopy
label_desc: Use image node_id 2 for calling the GBLinear obj's underlying member method code with example usage: obj.boosted_rounds() and returns: self