Addressed a minor code review feedback
Fix MAGN-1045 (output port missing for array element modification)
Made use of "MapIdentifiers" to generate value for "previewVariable"
Refactored and simplified "GraphUtilities.Parse" method
Added new test case "Defect_MAGN_1045" to verify the fix
Merge branch 'ChocoButter-2Become1' into Sanitizer
Merge pull request #1470 from Benglin/Sanitizer

Fix issues with Code Block Node out-ports with arrays