code: def get_X_slice(self, rmind):
          '''get X with slicing'''
          if self.forest.optimize_memory_use:
              return self.forest.X[:, rmind][self.subsample]
          else:
              return self.X[:, rmindf get_X_slice(self, rmind):
          '''get X with slicing'''
          if self.forest.optimize_memory_use:
              return self.forest.X[:, rmind][self.subsample]
          else:
              return self.X[:, rmind]
docs: get X with slicing