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kotlinlang

When I'm trying to create fatJar by using `com.github.jengelman.gradle.plugins:shadow:` I found in docs two different lines to applying this plugin:
1) `apply plugin: 'com.github.johnrengelman.plugin-shadow'` here <https://ktor.io/servers/deploy.html#fat-jar-gradle>
2) `apply plugin: "com.github.johnrengelman.shadow"` here <https://ktor.io/quickstart/docker.html#package-an-application-using-gradle>
What the diferences between them? 

with second line I succesfully create a fatJar - this is definitely true. ) 
with first line yesterday I had a problems - but it is not exactly. Message about it I write earlier
 <https://kotlinlang.slack.com/archives/C0A974TJ9/p1524754499000390>

Seems like it requires a bit normalization:

<https://plugins.gradle.org/plugin/com.github.johnrengelman.shadow>

<https://plugins.gradle.org/plugin/com.github.johnrengelman.plugin-shadow>

Not sure if they are just aliases or one depends on another.