How to use a custom generator with gradle plugin?

Description

I am new to gradle & openAPI. I generated a custom openapi generator and put it in a multi project setup. How do I use this generator in my task?

openapi-generator version

Latest

Command line used for generation

I have a two projects, api and my-generator. I have a gradle task in api as below:

dependencies {
    ....
    implementation(project(":my-generator"))
}

tasks.register<org.openapitools.generator.gradle.plugin.tasks.GenerateTask>("generateApiControllers") {
    generatorName.value("my-generator")

It throws ERROR: Unable to load class 'my-generator'.

How do I make openapi-generator recognise my-generator?

Start with the Gradle plugin's GenerateTask and the multi-project dependency declaration shown in the issue. Trace how generatorName.value("my-generator") resolves custom generators and how the my-generator project is exposed to that task. Done means the generateApiControllers task recognizes the custom generator and runs without the class-loading error.