OZG-4087 OZG-4165 change service methodname and signature

alfa-xdomea/src/main/java/de/ozgcloud/xdomea/ExportData.java

...ea/src/main/java/de/ozgcloud/xdomea/XDomeaController.java

...rc/main/java/de/ozgcloud/xdomea/XDomeaModelAssembler.java

...domea/src/main/java/de/ozgcloud/xdomea/XDomeaService.java

...c/test/java/de/ozgcloud/xdomea/ExportDataTestFactory.java

...rc/test/java/de/ozgcloud/xdomea/XDomeaControllerTest.java

...est/java/de/ozgcloud/xdomea/XDomeaModelAssemblerTest.java

...a/src/test/java/de/ozgcloud/xdomea/XDomeaServiceTest.java