public static <T extends Number> WithinGroup<T> percentileCont(T arg) {
        if (arg.doubleValue() < 0.0 || arg.doubleValue() > 1.0) {
            throw new IllegalArgumentException("The percentile value should be a number between 0 and 1");
        }
        return percentileCont(ConstantImpl.create(arg));
    }
Calculates a percentile based on a continuous distribution of the column value

@param arg argument
@return percentile_cont(arg)
querydsl-sql/src/main/java/com/querydsl/sql/SQLExpressions.java