Fixes

PR to see the diff in changes for https://github.com/twilio/twilio-oai-generator/pull/367 Note this also covers refactoring changes as well. and the new api-definition changes if any.

[x] I acknowledge that all my contributions will be made under the project's license
[ ] I have made a material change to the repo (functionality, testing, spelling, grammar)
[ ] I have read the Contribution Guidelines and my PR follows them
[ ] I have titled the PR appropriately
[ ] I have updated my branch with the main branch
[ ] I have added tests that prove my fix is effective or that my feature works
[ ] I have added the necessary documentation about the functionality in the appropriate .md file
[ ] I have added inline documentation to the code I modified

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twilio / twilio-java