code: def test_XXM_convert_to(DM):
      A = DM([[1, 2, 3], [4, 5, 6]], ZZ)
      B = DM([[1, 2, 3], [4, 5, 6]], QQ)
      assert A.convert_to(QQ) == B
      assert B.convert_to(ZZ) == A
  
imports: from sympy.external.gmpy import GROUND_TYPES
  from sympy import ZZ, QQ, GF, ZZ_I, symbols
  from sympy.polys.matrices.exceptions import DMBadInputError, DMDomainError, DMNonSquareMatrixError, DMNonInvertibleMatrixError, DMShapeError
  from sympy.polys.matrices.domainmatrix import DM, DomainMatrix, DDM, SDM, DFM
  from sympy.testing.pytest import raises, skip
  import pytest
label_desc: Use image node_id 42 for calling a global function with example usage: test_XXM_convert_to(DM) without return types