Refactoring private methods.

Signed-off-by: AndroWiiid <androwiiid@gmail.com>
Merge branch 'master' of https://github.com/AndroWiiid/NavigateXML.git

Conflicts:
	NavigateXML/src/main/java/fr/univ/lille1/CodeSearchEngineImpl.java


Signed-off-by: AndroWiiid <androwiiid@gmail.com>