Add okhttp dep
<name>HAPI FHIR Structures - FHIR R5</name>
<dependencies>
+ <dependency>
+ <groupId>com.squareup.okhttp3</groupId>
+ <artifactId>okhttp</artifactId>
+ </dependency>
<dependency>
<groupId>ca.uhn.hapi.fhir</groupId>
<artifactId>hapi-fhir-base</artifactId>
