Bar.groovy

package foo

class Bar {
  static final map = foo
  static final foo = [1,2,3]
}

Foo.groovy

package foo

class Foo {
 static final bar = Bar.map
 static final foobar = Bar.foo
}

// Groovy won't track dependencies across files... that is, Bar has a bug and you can fix it by reordering the static final attributes
// When reloading/reimporting the code, you'll see the correct/updated values in Bar
// But even if you manually reimport Foo, you'll still see the previous value (Foo.bar == null) if Foo.groovy hasn't been modified
// the only way to realize it, was to kill the application, and restart it (which on some Grails applications can take more than 2 minutes )