include method in gradle

Question

What does include in the settings.gradle actual is? Is it a method or something else. In any way there are neither method nor property with such name in the gradle Project. For instance I've written the following settings file to build all my project together:

include 'MP', 'API'

Answer 1

Yes, it's a method. Here is its api doc (that I simply found by browsing the index of the javadoc).