GUACAMOLE-5: Define base classes for REST API subresource locators.

guacamole/pom.xml

@@ -290,6 +290,11 @@
             <artifactId>guice</artifactId>
             <version>3.0</version>
         </dependency>
+        <dependency>
+            <groupId>com.google.inject.extensions</groupId>
+            <artifactId>guice-assistedinject</artifactId>
+            <version>3.0</version>
+        </dependency>
         
         <!-- Guice Servlet -->
         <dependency>