Jenkins groovy script - get artifacts from build by name and time

getBuildArtifactsByNameAndTime.groovy

def numOfMonths = 4

Calendar calendar = Calendar.getInstance();
calendar.add( Calendar.DAY_OF_MONTH, numOfMonths * -1 );
def filterTime = calendar.getTime()

def jobName = "MaaS-Job-Tests-Integration-Server-release-3.3"
def jen = Jenkins.getInstance();
def jobToClean = jen.getItem(jobName);

def buildsList = jobToClean.getBuilds()

def filterClosure = { b -> 
  b.timestamp?.time?.before(filterTime) 
}

def printClosure = { 
  
  println("${it.getArtifactManager()?.root().exists()}")
}

def deleteClosure = { 
  println("Deleting artifacts from ${it}")
  it.deleteArtifacts()
}

buildsList.findAll(filterClosure).each(printClosure)  


//println ("Builds that run for more than half an hour:")
  
//[hudson.model.FreeStyleProject.class, com.tikal.jenkins.plugins.multijob.MultiJobProject.class, hudson.matrix.MatrixProject.class]
//.each { className ->
	//	def foundJobs = jenkins.model.Jenkins.instance.getAllItems(className).findAll(filterClosure).each(printClosure)};