Refactoring Batch Processing to allow obtaining subjects from PDF Fil… #451

Job	Run time
Set CI/CD metadata	6s
Commit stage / Scan secrets	5s
Commit stage / Check file format	3s
Commit stage / Check Markdown format	3s
Commit stage / Check English usage	7s
Commit stage / Count lines of code	8s
Commit stage / Scan dependencies	24s
Test stage / Run Util Tests	24s
	1m 20s

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