STS provides visual ways to add different namespaces. Locate spring-integration-context.xml under /sisimple/src/main/resources/META-INF/spring/integration/ and open it. This is the default Spring configuration file. Click on the Namespaces tab to manage different namespaces of Spring Integration. The following screenshot shows imported namespaces for this sample project:

In the same editor, clicking on the Integration-graph tab will open a visual editor, which can be used to add/modify or delete endpoints, channels, and other components of Spring Integration. The following screenshot contains the integration graph for our sample project:

Let's have a quick look at the generated Maven POM—overall, there are three dependencies; only one for Spring Integration, and the other ones for Junit and log4j, as shown in the following screenshot: