Replace OAuth2AccessTokenJackson2Deserializer with my own custom deserializer - spring

Question

This class is deserializing an oauth2 token and I would like to tweak it. I created my own class extending StdDeserializer<OAuth2AccessToken> which at the moment is the same as the original class.
Here is the class:
public class MyCustomDeserializer extends StdDeserializer<OAuth2AccessToken> {
public MyCustomDeserializer() {
super(OAuth2AccessToken.class);
}
#Override
public OAuth2AccessToken deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException,
JsonProcessingException {
String tokenValue = null;
String tokenType = null;
String refreshToken = null;
Long expiresIn = null;
Set<String> scope = null;
Map<String, Object> additionalInformation = new LinkedHashMap<String, Object>();
// TODO What should occur if a parameter exists twice
while (jp.nextToken() != JsonToken.END_OBJECT) {
String name = jp.getCurrentName();
jp.nextToken();
if (OAuth2AccessToken.ACCESS_TOKEN.equals(name)) {
tokenValue = jp.getText();
}
else if (OAuth2AccessToken.TOKEN_TYPE.equals(name)) {
tokenType = jp.getText();
}
else if (OAuth2AccessToken.REFRESH_TOKEN.equals(name)) {
refreshToken = jp.getText();
}
else if (OAuth2AccessToken.EXPIRES_IN.equals(name)) {
try {
expiresIn = jp.getLongValue();
} catch (JsonParseException e) {
expiresIn = Long.valueOf(jp.getText());
}
}
else if (OAuth2AccessToken.SCOPE.equals(name)) {
scope = parseScope(jp);
} else {
additionalInformation.put(name, jp.readValueAs(Object.class));
}
}
// TODO What should occur if a required parameter (tokenValue or tokenType) is missing?
DefaultOAuth2AccessToken accessToken = new DefaultOAuth2AccessToken(tokenValue);
accessToken.setTokenType(tokenType);
if (expiresIn != null) {
accessToken.setExpiration(new Date(System.currentTimeMillis() + (expiresIn * 1000)));
}
if (refreshToken != null) {
accessToken.setRefreshToken(new DefaultOAuth2RefreshToken(refreshToken));
}
accessToken.setScope(scope);
accessToken.setAdditionalInformation(additionalInformation);
return accessToken;
}
private Set<String> parseScope(JsonParser jp) throws JsonParseException, IOException {
Set<String> scope;
if (jp.getCurrentToken() == JsonToken.START_ARRAY) {
scope = new TreeSet<String>();
while (jp.nextToken() != JsonToken.END_ARRAY) {
scope.add(jp.getValueAsString());
}
} else {
String text = jp.getText();
scope = OAuth2Utils.parseParameterList(text);
}
return scope;
}
}
Here I am registering the bean:
#Bean
public ObjectMapper configObjectMapper() {
final ObjectMapper objectMapper = new ObjectMapper();
objectMapper.enable(SerializationFeature.INDENT_OUTPUT);
final SimpleModule module = new SimpleModule("configModule", com.fasterxml.jackson.core.Version.unknownVersion());
module.addDeserializer(OAuth2AccessToken.class, new MyCustomDeserializer());
objectMapper.registerModule(module);
return objectMapper;
}
Testing the above code the flow doesn't reach my class but the original. I am using spring boot 2.1.4