default T extend(Type supertype) {
	    return setSupertype(supertype);
    }
Sets the super type of this model. This is a synonym for
{@link #setSupertype(Type)}.

@param supertype  the super type
@return           a reference to this

@since 2.5
common-parent/codegen/src/main/java/com/speedment/common/codegen/model/trait/HasSupertype.java