Empty source code diff file of the overloaded method

[amtsvch]

• The issue has occurred in the testcase org.apache.tomcat.util.http.TestResponseUtil.testMimeHeadersAddAllWithNone of Tomcat, commit a9aa71ec61aca7b5e750bde1042c1bbd5d10c7ac.
• It concerns the overloaded method addVaryFieldName(Adapter adapter, String name), that was called inside another addVaryFieldName-method.

In properties_tomcat/methods/.. the file with the method source code diffs is created, but is empty.

It can be reproduced with the following select-command:
select -testTransformer de.dagere.peass.testtransformation.JUnitTestTransformer
-testExecutor de.stro18.peass_ant.executor.AntTestExecutor -timeout 5
-includes org.apache.tomcat.util.http.TestResponseUtil#testMimeHeadersAddAllWithNone
-endcommit a9aa71ec61aca7b5e750bde1042c1bbd5d10c7ac -startcommit 01ad27c568594f32ab178983d97e53b8b3b25d25 -folder ../tomcat/ -testClassFolder test -classFolder java:webapps/examples/WEB-INF/classes
-forbiddenMethods org.apache.catalina.startup.Tomcat#start