void VisitAddOrDeleteMethodCall(MethodCallExpression node, ChildChangeType changeType)
{
var instance = node.Object as MemberExpression ??
throw new NotSupportedException($"{changeType.ToString()} method is only supported when called on an object child property, eg. object.ChildProperty.{changeType.ToString()}(...).");
var value = ValueVisitor.ExtractValue(node.Arguments[0]) as IMetadataObject ??
throw new NotSupportedException("The parameter provided for the Add method call could not be extracted as a non-nullable instance.");
var changes = GetChildChangeList(instance.Member.Name);
changes.Add(new ChildChange(value, changeType));
}
/// <summary>
/// Initializes a new instance of the <see cref="ChildChange" /> class.
/// </summary>
/// <param name="child">The child.</param>
/// <param name="type">The type.</param>
public ChildChange(IMetadataObject child, ChildChangeType type)
{
Type = type;
Child = child ?? throw new ArgumentNullException(nameof(child));
}