@Override
    public <R,C> R accept(Visitor<R,C> v, C context) {
        if (predicate != null) {
            return predicate.accept(v, context);
        } else {
            return null;
        }
    }
Create a BooleanBuilder with the given initial value

@param initial initial value
querydsl-core/src/main/java/com/querydsl/core/BooleanBuilder.java