declare modules in parent pom

code/pom.xml

@@ -23,6 +23,11 @@
         <surefire-plugin.version>3.2.5</surefire-plugin.version>
     </properties>
 
+    <modules>
+      <module>core-api-consumer</module>
+      <module>core-api-producer</module>
+    </modules>
+
     <dependencyManagement>
         <dependencies>
             <dependency>