1 Setting Manifest Entries with the ManifestResourceTransformer
 2 The ManifestResourceTransformer allows existing entries in the MANIFEST to be replaced and new entries added.
 3 
 4 For example, the following sample sets
 5 
 6 the Main-Class entry to the value of the app.main.class property,
 7 the X-Compile-Source-JDK entry to the value of the maven.compile.source property and
 8 the X-Compile-Target-JDK entry to the value of the maven.compile.target property.
 9 <project>
10   ...
11   <build>
12     <plugins>
13       <plugin>
14         <groupId>org.apache.maven.plugins</groupId>
15         <artifactId>maven-shade-plugin</artifactId>
16         <version>2.4.3</version>
17         <executions>
18           <execution>
19             <phase>package</phase>
20             <goals>
21               <goal>shade</goal>
22             </goals>
23             <configuration>
24               <transformers>
25                 <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
26                   <manifestEntries>
27                     <Main-Class>${app.main.class}</Main-Class>
28                     <X-Compile-Source-JDK>${maven.compile.source}</X-Compile-Source-JDK>
29                     <X-Compile-Target-JDK>${maven.compile.target}</X-Compile-Target-JDK>
30                   </manifestEntries>
31                 </transformer>
32               </transformers>
33             </configuration>
34           </execution>
35         </executions>
36       </plugin>
37     </plugins>
38   </build>
39   ...
40 </project>