code: def test_get_by_slice(self):
      self.assertSequenceEqual(self.row[1:], ("b", "c"))
  
imports: import unittest
  from agate.mapped_sequence import MappedSequence
label_desc: Use image node_id 12 for calling the TestMappedSequence obj's underlying member method code with example usage: obj.test_get_by_slice() without return types