public void defineContentOfOperationComboBox(String pathToWsdlFile, String roleName) {
ArrayList<Operation> operations;
if (wsdlFileRepresentation == null){
try {
wsdlFileRepresentation = new Wsdl().readDataFromWSDL(pathToWsdlFile);
}
catch (Exception e) {
e.printStackTrace();
showErrorPopup(
Messages.getString("Transition.Properties.BPEL.ErrorWhileReadingWsdlFileTitle"),