private @Nullable String getSetterPropertyName(@Nullable PsiMethod calledMethod) {
    if (PropertyUtilBase.isSimplePropertySetter(calledMethod)) {
      return PropertyUtilBase.getPropertyName(calledMethod);
    }
    PsiReferenceExpression reference = ExcludeSillyAssignment.getAssignedReference(myPosition);
    if (reference != null) {
      PsiElement target = reference.resolve();
      if (target instanceof PsiField) {
        return PropertyUtilBase.suggestPropertyName((PsiField)target);
      }
    }
    return null;
  }
private @Nullable String getSetterPropertyName(@Nullable PsiMethod calledMethod)