Vale Set Generator giving error from certain XLSX files from VASC

[guptava]

Describe the bug
Vale Set Generator giving error from certain XLSX files from VASC

To Reproduce
Steps to reproduce the behavior:

1. Download Value Set from VSAC, eg. https://vsac.nlm.nih.gov/valueset/2.16.840.1.113762.1.4.1034.51/expansion/latest
2. Run VSAC tooling to generate the value set
3. Error received Unknown CodeSystem name: Code System

The excel file has an extra row 9, that is causing the tooling to read the header of the table marked "Code System". Deleting this row fixes this error

Expected behavior
The tooling should work on excel sheets downloaded from VSAC, without making any changes in the excel file

Desktop (please complete the following information):

• OS: MacOS 12.6.8
• Java Version 9