How to change location of the Application.groovy class in Grails 3.0.3? -

i've created new application in grails 3.0.3 using console:

grails create-app hello 

and it's running fine with:

grails run-app 

but now, change package name application.groovy located (original location hello/grails-app/init/hello/application.groovy) else, eg hello/grails-app/init/foo/application.groovy. when i'm trying start application after change there exception:

error: not find or load main class hello.application 

source of application.groovy file (generated grails, except package name)

package foo  import grails.boot.grailsapp import grails.boot.config.grailsautoconfiguration  class application extends grailsautoconfiguration {     static void main(string[] args) {         grailsapp.run(application, args)     } } 

any hints should change able rename package?

edit: in documentation there fragment:

grails-app/init/package_path/application.groovy application class used spring boot start application 

but still don't know package_path , how set this.

if package statement matches directory structure should work. run ./gradlew clean run.