Check that gene identifiers used in extensions exist - CHECK FAILURE:  expected 0 but got 12
value
  SPNCRNA.310
  SPCC576.10c5
  SPAC16.05c0
  SPAC16.05c6
  SPAC16.05c5
  SPBC1685.12c
  SPBC36.13
  SPCC576.10c0
  SPNCRNA.341
  SPAC16.05c9
  SPAC16.05c8
  SPCC417.04