Update AddStaticVariableOnProducerSessionBean to modify XML defined EJBs

[karthikNousher]

What's changed?

• Added a xml scanning to detect the session beans and also apply the recipe to those classes.
• Recipe now updates the classes that are specified in the ejb-jar.xml file
• Added new test case to test the xml scanning functionality.

What's your motivation?

• To create a recipe that can not only be used to add a static variable to session beans annotated with @Stateless, @Stateful, or @Singleton, but also to those defined in the xml file.

Any additional context

• Extended the recipe to scan ejb-jar.xml for session bean definitions and incorporate these beans in the recipe processing.
• This way it allows the recipe to apply changes to classes that does not have @Stateless, @Stateful, or @Singleton
  annotation but are specified as session beans in the XML configuration.

Checklist

• I've added unit tests to cover both positive and negative cases
• I've read and applied the recipe conventions and best practices
• I've used the IntelliJ IDEA auto-formatter on affected files

[rlsanders4]

@timtebeek Could we also get @karthikNousher added to the IBM team? Thanks!
https://github.com/orgs/openrewrite/teams/ibm

[rlsanders4]

Hey Karthik, could you look though my comments from the last review? Several did not get addressed, such as:

• Using a Set instead of a Map as the accumulator
• Checking for ejb-jar.xml in a precondition for the scanner (this is more efficient than visitDocument)
• Ensuring that the scanner is only executing on tags with this path ejb-jar/enterprise-beans/session

[rlsanders4]

Looks good to me. I think you are ready to have someone from the OpenRewrite team take a look.

[timtebeek]

Thanks both! Neat addition to cover these cases as well, and perfect use of a ScanningRecipe to do so.

[github-actions]

Suggested change

	import org.openrewrite.java.tree.JavaType;
	import org.openrewrite.java.tree.Space;
	import org.openrewrite.java.tree.Space;