Welcome. This is a Object Mapper for Unirest based on the popular Jackson JSON parser. Use it like this:
Unirest.config().setObjectMapper(new JacksonObjectMapper());
You may also provide it with your own com.fasterxml.jackson.databind.ObjectMapper.
Install With Maven
<dependency>
<groupId>com.konghq</groupId>
<artifactId>unirest-objectmapper-jackson</artifactId>
<version>3.0.01</version>
</dependency>