/// <summary>
/// Returns whether an object satisfying the inputted predicate exists within the container.
/// First serches the ActiveObjects and then the ObjectsToAdd.
/// </summary>
/// <param name="predicate">The predicate the object must satisfy</param>
/// <returns>True if such an object exists and false if not</returns>
public bool Exists(Predicate <T> predicate)
{
// Check our active objects for a valid object
if (ActiveObjects.Exists(predicate))
{
// Return true if one exists
return(true);
}
// Check our objects to add for a valid object
if (ObjectsToAdd.Exists(predicate))
{
// Return true if one exists
return(true);
}
// Otherwise no such object exists so return false
return(false);
}