Android Studio 2020.3.1 (latest stable) requires Gradle 7 + tweaks to plugin

[casperbang]

Describe the bug

Upgrading to latest stable Android Studio requires Gradle version 7. However, the latest release of this plugin only supports Gradle 6.2. Trying to use the existing plugin with an Android Studio 7 projects results in problems with wipeOutputDir since it has both an is and a get - get method in the source, no longer allowed.

Environment

Plugin version: 2.18.2
Swagger Codegen version: 2.4.2
Gradle version: 7.0.2
Java version: 11
OS: OSX

[int128]

I released the new version with Gradle 7 support.
https://github.com/int128/gradle-swagger-generator-plugin/releases/tag/2.19.0