code: def setUp(self):
      self.values = [0, 10, 20, 30, 40, 50]
      self.quantiles = Quantiles(self.values)
  
file_path: agate/tests/test_utils.py
imports: import unittest
  from decimal import Decimal
  from agate.utils import Quantiles, letter_name, round_limits
label_desc: Use image node_id 1 for calling the TestQuantiles obj's underlying member method code with example usage: obj.setUp() without return types