code: def test_statistics_category(self):
      self.category = "Statistics"
      self.data.ta.strategy(
          self.category, verbose=verbose, timed=strategy_timed
      )
  
imports: from multiprocessing import cpu_count
  from time import perf_counter
  from .config import sample_data
  from .context import pandas_ta
  from unittest import skip, skipUnless, TestCase
  from pandas import DataFrame
label_desc: Use image node_id 21 for calling the TestStrategyMethods obj's underlying member method code with example usage: obj.test_statistics_category() without return types