@Nullable
  private static GrAccessorMethod doGetSetter(GrField field) {
    PsiClass containingClass = field.getContainingClass();
    if (containingClass == null) return null;
    PsiMethod[] setters = containingClass.findMethodsByName(GroovyPropertyUtils.getSetterName(field.getName()), false);
    for (PsiMethod setter : setters) {
      if (setter instanceof GrAccessorMethod) {
        return (GrAccessorMethod)setter;
      }
    }
    return null;
  }
@Nullable
  private static GrAccessorMethod doGetSetter(GrField field)