What is the meaning of '$' in build.gradle script

Help/Discuss
1

Hello!
I am reading documentation about native builds. And there is a following example for building all variants.
model {
tasks {
buildAllExecutables(Task) {
dependsOn $.binaries.findAll { it.buildable }
}
}
}
71.16.5. Building all possible variants
What is the meaning of this dollar sign before binaries container?

2

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