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public abstract class classBase
{
protected abstract void m1(int i);
protected abstract void m2(string s);
protected abstract void m3(double d);
}
public abstract class class1 : classBase
{
protected override void m3(double d)
{
//do nothing
}
}
public abstract class class2 : classBase
{
protected override void m1(int i)
{
//do nothing
}
}
public class child1 : class1
{
}