code: @Override
      public final int readArrayB(DeMember member, byte[] typevals, Decodeable componentDecoder) {
          if (member == null || componentDecoder == null) return Reader.SIGN_NOLENBUTBYTES;
          Type type = componentDecoder.getType();
          if (!(type instanceof Class)) return Reader.SIGN_NOLENBUTBYTES;
          Class clazz = (Class) type;
          if (clazz.isPrimitive() || clazz == Boolean.class
              || clazz == Byte.class || clazz == Short.class
              || clazz == Character.class || clazz == Integer.class
              || clazz == Float.class || clazz == Long.class
              || clazz == Double.class) {
              return Reader.SIGN_NOLENBUTBYTES;
          }
          return Reader.SIGN_NOLENGTH;
      }
docs: 判断下一个非空白字符是否为[
  
  @param member           DeMember
  @param typevals         byte[]
  @param componentDecoder Decodeable
  
  @return SIGN_NOLENGTH 或 SIGN_NULL