public abstract BooleanConst GreaterThan(StringConst b);
public abstract BooleanConst LessThan(StringConst b);
public abstract BooleanConst EqualTo(StringConst b);
public abstract BooleanConst GreaterThan(StringConst b);
public abstract BooleanConst LessThan(StringConst b);
public abstract BooleanConst EqualTo(StringConst b);