public void addFieldAnnotations(CstFieldRef field, Annotations annotations, DexFile dexFile) {
    if (fieldAnnotations == null) {
      fieldAnnotations = new ArrayList<FieldAnnotationStruct>();
    }

    fieldAnnotations.add(
        new FieldAnnotationStruct(field, new AnnotationSetItem(annotations, dexFile)));
  }
Adds a field annotations item to this instance.

@param field {@code non-null;} field in question
@param annotations {@code non-null;} associated annotations to add
@param dexFile {@code non-null;} dex output
android/android_framework/dex-maker/src/main/java/com/android/dx/dex/file/AnnotationsDirectoryItem.java