code: def test_merge(self):
      table_a = Table(self.rows, self.column_names, self.column_types)
      table_b = Table(self.rows, self.column_names)
      table_c = Table.merge([table_a, table_b])
  
      self.assertIsNot(table_c, table_a)
      self.assertIsNot(table_c, table_b)
      self.assertColumnNames(table_c, self.column_names)
      self.assertColumnTypes(table_c, [Number, Number, Text])
      self.assertRows(table_c, self.rows + self.rows)
  
file_path: agate/tests/test_table/test_merge.py
imports: from agate import Table
  from agate.data_types import Number, Text
  from agate.exceptions import DataTypeError
  from agate.testcase import AgateTestCase
label_desc: Use image node_id 2 for calling the TestMerge obj's underlying member method code with example usage: obj.test_merge() without return types