code: def test_print_structure_row_limit(self):
      tables = self.tables
      for i in range(25):
          tables[str(i)] = self.tables["table1"]
  
      tableset = TableSet(tables.values(), tables.keys())
      output = StringIO()
      tableset.print_structure(output=output)
      lines = output.getvalue().strip().split("\n")
  
      self.assertEqual(len(lines), 22)
  
imports: import json
  import shutil
  from collections import OrderedDict
  from io import StringIO
  from agate import Table, TableSet
  from agate.computations import Formula
  from agate.data_types import Number, Text
  from agate.testcase import AgateTestCase
label_desc: Use image node_id 20 for calling the TestTableSet obj's underlying member method code with example usage: obj.test_print_structure_row_limit() without return types