code: def test_mendel_errors_4(self):
      mt = hl.import_vcf(resource("mendel.vcf"))
      ped = hl.Pedigree.read(resource("mendel.fam"))
      men, fam, ind, var = hl.mendel_errors(mt["GT"], ped)
  
      assert ind.count() == 7
  
imports: import unittest
  import hail
  from ..helpers import *
label_desc: Use image node_id 8 for calling the Tests obj's underlying member method code with example usage: obj.test_mendel_errors_4() without return types