code: public static <T> T fromString(String value, Class<T> valueType) throws IOException {
          return jsonMapper.readValue(value, valueType);
      }
docs: Returns the object of the specified class represented by the specified JSON {@code String}.
  
  @param value     A JSON {@code String} to be parsed.
  @param valueType The class of the object to be parsed.
  @param <T>       The type of the object to be parsed.
  @return The object of the specified class represented by the specified JSON {@code String}.
  @throws IOException If there are parsing problems.