text: //******************************************************************************
  //
  // Copyright (c) 2016 Microsoft Corporation. All rights reserved.
  //
  // This code is licensed under the MIT License (MIT).
  //
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  // THE SOFTWARE.
  //
  //******************************************************************************
  #pragma once
  
  #import <Foundation/NSObjCRuntime.h>
  #import <Foundation/NSExpression.h>
  #import <Foundation/NSArray.h>
  #import <Foundation/NSString.h>
  #import <Foundation/NSNumber.h>
  
  @interface NSExpressionFunction : NSExpression
  - (id)initWithFunctionName:(NSString*)name arguments:(NSArray*)args;
  - (id)initWithExpressionTarget:(NSExpression*)target selectorName:(NSString*)name arguments:(NSArray*)parameters;
  @property (readonly, copy) NSArray* args;
  @property (readonly, assign) SEL selector;
  @property (readonly, copy) NSExpression* target;
  
  @end