// find the next element to execute or exit if none could be found
continueModule = selectorStrategy.updateElementStack(executionContext);
if (! continueModule) return;
// fetch the new execution element
Element newElement = elementTree.getTop();
Executable newExecutable = null;
if (newElement == null) {
continueModule = false;
return;
}
// fetch the executable executable
newExecutable = newElement.getExecutable();
if (newExecutable == null) {
continueModule = false;
return;
}