Class ClearCaches cannot be resolved in custom script

[Holger Niehaus]

We use a script clear Jira and Groovy caches ()

import com.onresolve.scriptrunner.canned.jira.admin.ClearCaches

def clearCaches = new ClearCaches()
// Groovy Cache
def inputs = [
(ClearCaches.FIELD__WHICH__CACHE) : ClearCaches.FIELD__WHICH__CACHE_GCL
]
clearCaches.doScript(inputs)

// Jira Cache
inputs = [
(ClearCaches.FIELD__WHICH__CACHE) : ClearCaches.FIELD__WHICH__CACHE_JIRA
]
clearCaches.doScript(inputs)

It worked in earlier Versions of JIRA / Script Runner. Now (8.5.3 / 5.6.14.1-p5) it cannot be compiled because com.onresolve.scriptrunner.canned.jira.admin.ClearCaches cannot be resolved.

Any suggestions?