public <N extends Number & Comparable<N>> NumberExpression<T> add(N right) {
        return Expressions.numberOperation(getType(), Ops.ADD, mixin, ConstantImpl.create(right));
    }
Create a {@code this + right} expression

<p>Get the sum of this and right</p>

@param right rhs of expression
@return this + right
querydsl-core/src/main/java/com/querydsl/core/types/dsl/NumberExpression.java