MicroProfile Rest Client Spec PDF
MicroProfile Rest Client Spec HTML
MicroProfile Rest Client Spec Javadocs
To add to you Maven pom.xml file:
<dependency>
<groupId>org.eclipse.microprofile.rest.client</groupId>
<artifactId>microprofile-rest-client-api</artifactId>
<version>4.0</version>
</dependency>