I need to upload file with HTTP post in gradle build.
I found [HTTPPlugin](https://http-builder-ng.github.io/gradle-http-plugin/asciidoc/html5/) which could make the deal. I made a simple build but it gives me error:

```
Caused by: groovy.lang.MissingPropertyException: Could not get unknown 
property 'HttpTask' for root project 'sample-app' of type 
org.gradle.api.Project.

```

build.gradle

```
plugins {
    id "io.github.http-builder-ng.http-plugin" version "0.1.1"
}

task notify(type:HttpTask){
    config {
        request.uri = 'http://something.com'
    }
    post {
        request.uri.path = '/notify'
        request.body = [event: 'activated']
        response.success {
            println 'The event notification was successful'
        }
    }
}

```

It seems gradle cannot find HTTPTask. Any idea what I'm missing?