abstrac_to.cs

public void DoSomthingWithACar(ICar car)
{
    // Do something with a any implementation of ICar
}

abstract_from.cs

public void DoSomthingWithACar(Car car)
{
    // Do something with a specific Car
}

ClassToBeRefactored_1_from.cs

namespace Fohjin.Refactoring
{
    public class ClassToBeRefactored
    {
        public void DoSomething()
        {
            DependencyA dependencyA = new DependencyA();
            DependencyB dependencyB = new DependencyB();
        }
    }
}

ClassToBeRefactored_1_to.cs

namespace Fohjin.Refactoring
{
    public class ClassToBeRefactored
    {
        private readonly DependencyA _dependencyA;
        private readonly DependencyB _dependencyB;

        public ClassToBeRefactored() : this(new DependencyA(), new DependencyB()) {}

        public ClassToBeRefactored(DependencyA dependencyA, DependencyB dependencyB)
        {
            _dependencyA = dependencyA;
            _dependencyB = dependencyB;
        }

        public void DoSomething()
        {
            // Use _dependencyA and _dependencyB
        }
    }
}

naming_from.cs

public double Usage(ICar car)
{
    // Calculate average kilometers per liter
}

naming_to.cs

public double AverageUsageKilometerPerLiter(ICar car)
{
    // Calculate average kilometers per liter
}