code: @Override
      protected void parseSplitSampleData(StudyEntry variant, VariantFileMetadata fileMetadata, String[] fields,
                                          String reference, String[] alternateAlleles)
              throws NonStandardCompliantSampleField {
          // Nothing to do
          variant.setSamplesPosition(Collections.emptyMap());
      }
docs: a literal dot. extracted to avoid confusion and avoid using the wrong "." with split()