docs: public final Serializable nextValue(final String columName, final int columnIndex, final int type, final int meta,
                                          boolean isBinary) {
          fNull = nullBits.get(nullBitIndex++);
  
          if (fNull) {
              value = null;
              javaType = mysqlToJavaType(type, meta, isBinary);
              length = 0;
              return null;
          } else {
              // Extracting field value from packed buffer.
              return fetchValue(columName, columnIndex, type, meta, isBinary);
          }
      }