Swagger Codegen Generators v1.0.49

What's Changed

• Handle NPE error message by @micryc in #1274
• Update RestSharp version by @micryc in #1276
• prepare release 1.0.49 by @micryc in #1279
• Revert "prepare release 1.0.49" by @micryc in #1280

New Contributors

• @micryc made their first contribution in #1274

Full Changelog: v1.0.48...v1.0.49