How to correctly add the plugins section in the build.gradle file?

Question

gradle

Following the Realm documentation for Android, stumbled on this step:

Apply the realm-android plugin near the top of your application level build.gradle file:
apply plugin: 'realm-android'

I have Android Studio (4.1.2). In a new empty project, the build.gradle file has the following structure:

plugins {
    id 'com.android.application'
}
...

When adding the desired line (and sync):

apply plugin: 'realm-android'

plugins {
    id 'com.android.application'
}
...

An error is thrown:

Build file 'C:\Users\Admin\AndroidStudioProjects\RealmNotes\app\build.gradle' line: 3
Could not compile build file 'C:\Users\Admin\AndroidStudioProjects\RealmNotes\app\build.gradle'.
> startup failed:
build file 'C:\Users\Admin\AndroidStudioProjects\RealmNotes\app\build.gradle': 3: only buildscript {} and other plugins {} script blocks are allowed before plugins {} blocks, no other statements are allowed

This is also wrong:

plugins {
    id 'com.android.application', 'realm-android'
}
...

An error is thrown:

Build file 'C:\Users\Admin\AndroidStudioProjects\RealmNotes\app\build.gradle' line: 2

Could not compile build file 'C:\Users\Admin\AndroidStudioProjects\RealmNotes\app\build.gradle'.
> startup failed:
build file 'C:\Users\Admin\AndroidStudioProjects\RealmNotes\app\build.gradle': 2: argument list must be exactly 1 literal String or String with property replacement

I solved the problem by writing everything in a different format:

/*
plugins {
    id 'com.android.application'
}
*/
apply plugin: 'com.android.application'
apply plugin: 'realm-android'

...

Question: how to register several plugins in the format offered by the Studio (in the plugins {...} section)?