code: static float encodeQuality(String value) {
          final float qual;
          if (StringUtils.isEmpty(value) || value.equals(".")) {
              qual = MISSING_QUAL_VALUE;
          } else {
              qual = Float.parseFloat(value);
          }
          return qual + 1;
      }
docs: Encodes the {@link String} value of the Quality into a float.
  
  See {@link VcfRecordProtoToVariantConverter#getQuality(float)}
  Increments one to the quality value. 0 means missing or unknown.
  
  @param value String quality value
  @return Quality