How to access method getStepTestByName in a teardown script

HimanshuTayal I'm trying to get the logic from the groovy script I've written working at the project level. Currently the functionality requires me to include a groovy script within each testcase. I was wanting to be able to use the same logic in a setup script to reduce the amount of code needed to be inserted into the project. Can we use Java libraries in setup scripts? I'm not sure it is even possible to transfer this approach to a setup script at project level. 

class SelectedMarkets{
	def static selectMarketsToRunTests(testRunner, context, log){
		def dataPath
		def dataFile
		def headers
		def rowLine

  		//get the specifcic global property 
		def objGlobalProperties = com.eviware.soapui.SoapUI.globalProperties;
    	        def regionToRun = objGlobalProperties.getPropertyValue("region")
	        def regionArray = regionToRun.tokenize();
		log.info regionArray

    	//get original dataPath
    	dataPath = context.expand( '${#TestCase#DataPath}' )

    	//get original dataFile
    	dataFile = context.expand( '${#TestCase#DataFile}' )
    	//read current file 
    	FileInputStream fstream = new FileInputStream(dataPath +"/"+dataFile);
    	DataInputStream data = new DataInputStream(fstream);
    	BufferedReader br = new BufferedReader(new InputStreamReader(data));
    	//find relevant lines and then write to another file
    		while ((rowLine = br.readLine()) != null){
    			if(rowLine.contains("locale")){
    					headers = "$rowLine" 
    					log.info headers;
    				}

				regionArray.each{
					//if finds global property write to new file
    				if(rowLine.contains(it) && !rowLine.contains("locale")){
    					//create temporary file
    					def tempFile = File.createTempFile("temp" + dataFile, ".csv") 
    					//write revalent locales to temp file
    					headers += "\n$rowLine"
    					tempFile.write headers
    					log.info headers
    					//set the datasource to the temp file
    					def dataSourceStep = testRunner.testCase.getTestStepByName("DataSource")
    					dataSourceStep.getDataSource().setFileName(tempFile.absolutePath)
    	  			}
				}
    		}
    	data.close();
  	}
}