Cannot convert type 'Task' to 'Task'

Question

I have the following function with a delegate parameter that accepts a type of one interface and returns a task of another.

public void Bar(Func

        

Answer 1

I am using another version of GeneralizeTask, which is stated by @Recursive, on Asp Net Core Framework. Here it is:

public static Task GeneralizeTask(this Task task, CancellationToken cancellationToken = default) 
 where TBase : class 
 where TDerived : TBase
{
    var result = task.ContinueWith(t => (TBase)t.Result, cancellationToken);
    return result;
}