How to use

iterator

method

in

hudson.util.DescribableList

private void addOrModifyEnvInjectBuildWrapper(
    @Nonnull DescribableList<BuildWrapper, Descriptor<BuildWrapper>> wrappers, 
    @Nonnull BuildWrapper wrapper) throws EnvInjectException {
  //Iterate through all wrappers and remove the envInjectWrapper if exists: only one is authorized and the new wins
  Iterator<BuildWrapper> buildWrapperIterator = wrappers.iterator();
  while (buildWrapperIterator.hasNext()) {
    BuildWrapper buildWrapper = buildWrapperIterator.next();
    if (buildWrapper.getClass().isAssignableFrom(wrapper.getClass())) {
      buildWrapperIterator.remove();
    }
  }
  wrappers.add(wrapper);
}

Iterator<AbstractProjectReference> iter = this.getProjectReferences().iterator(); 
while (iter != null && iter.hasNext()) {
  AbstractProjectReference apr = iter.next();

Iterator<AbstractProjectReference> iter = this.getProjectReferences().iterator(); 
while (iter != null && iter.hasNext()) {
  AbstractProjectReference apr = iter.next();

BuildableItemWithBuildWrappers buildableItemWithBuildWrappers = (BuildableItemWithBuildWrappers) item;
DescribableList<BuildWrapper, Descriptor<BuildWrapper>> wrappersList = buildableItemWithBuildWrappers.getBuildWrappersList();
Iterator<BuildWrapper> buildWrapperIterator = wrappersList.iterator();
while (buildWrapperIterator.hasNext()) {
  BuildWrapper buildWrapper = buildWrapperIterator.next();