Hi Pedram, you can follow this repo https://github.com/OpenAPITools/openapi-generator/tree/master/modules/openapi-generator-gradle-plugin

and add the codegen to dependencies, so it looks like this:

dependencies {
 classpath “org.openapitools:openapi-generator-gradle-plugin:4.3.1”
 classpath “com.bluetrainsoftware.maven:openapi-dart-generator:3.2”
 }

Also choose “dart2-api” as your

generatorName