java - What is the difference between Annotation Driven and Global extensions in Spock -

i'm trying learn writing extensions in spock testing framework. i've come across 2 different types of extensions:

• annotation driven (like @ignore, etc)
• global extension (like integrating spring framework inside test)

so question is: what difference between them? when should prefer 1 type of extensions on custom extensions?

thanks

annotation driven extensions have smaller scope , usually affect single test method (or group of methods)

global extensions have larger scope , allow affect how spock things in broader area (e.g. reporting)

my suggestion start annotation extension , see if can accomplish want in smallest scope possible.