@Override
    public Expression<?> getArg(int index) {
        return opMixin.getArg(index);
    }
{@code JTSPointOperation} extends {@link JTSPointExpression} to implement the
{@link Operation} interface

@author tiwe

@param <T>
querydsl-spatial/src/main/java/com/querydsl/spatial/jts/JTSPointOperation.java