using System;

public class Program

{

    public static void Main()

    {

         var pointsReferencedByElems = new List<int>();

​

            // Set up which points are referenced by different combinations of elements.

            _serviceLocator.AssetFrameworkClientMock.Setup(d => d.GetAttributePointIds(It.IsAny<Guid>(), It.IsAny<List<Guid>>()))

                .Callback<Guid, IEnumerable<Guid>>((f, g) =>

                                                            {

                                                                pointsReferencedByElems.Clear();

                                                                if (!g.Any())

                                                                {

                                                                    // If there are no elements, list of referenced points

                                                                    // should be empty.

                                                                }

                                                                //point1Array ={1,2}

                                                                //point2Array ={2}

                                                                //afRefenceAddedPointIdsAll ={1,2,3}

                                                                else if (g.Contains(elementId1))

                                                                {

                                                                    pointsReferencedByElems.AddRange(point1IdsArray);

                                                                }

                                                                else if (g.Contains(elementId2))

                                                                {

                                                                    pointsReferencedByElems.AddRange(point2IdsArray);

                                                                }

                                                                else

                                                                {

                                                                    pointsReferencedByElems.AddRange(afReferencedAddedPointIdsAll);

                                                                }

                                                                pointsReferencedByElems = pointsReferencedByElems.AsQueryable().Distinct().ToList();

                                                            })

                                                            .Returns(pointsReferencedByElems);         

    }

}