private FieldValue getExactFieldValue(DimensionValues dimensionValues) {
            for (FieldValue fieldValue : asList())
                if (fieldValue.getDimensionValues().equals(dimensionValues))
                    return fieldValue;
            return null;
        }
Returns the field value having exactly the given dimensions, or null if none
container-search/src/main/java/com/yahoo/search/query/profile/QueryProfileVariants.java