openapi-generator-cli 5.4.0
  commit : 4a36be7
  built  : 2022-01-31T05:31:36Z
  source : https://github.com/openapitools/openapi-generator
  docs   : https://openapi-generator.tech/

openapi-generator generate -i spec.json -g dart -o dart_client