Add javadoc aggregator

pom.xml

@@ -77,6 +77,22 @@
 						</dependency>
 					</dependencies>
 				</plugin>
+				<plugin>
+					<artifactId>maven-javadoc-plugin</artifactId>
+					<configuration>
+						<aggregate>true</aggregate>
+						<excludePackageNames>com.example,functions,example</excludePackageNames>
+					</configuration>
+					<executions>
+						<execution>
+							<id>aggregate</id>
+							<goals>
+								<goal>aggregate-jar</goal>
+							</goals>
+							<phase>install</phase>
+						</execution>
+					</executions>
+				</plugin>
 			</plugins>
 		</pluginManagement>
 	</build>