(PECL solr >= 0.9.2)
SolrQuery::setFacetEnumCacheMinDefaultFrequency — Sets the minimum document frequency used for determining term count
$frequency, string $field_override = ?): SolrQuerySets the minimum document frequency used for determining term count
valueThe minimum frequency
field_overrideThe name of the field.
Returns the current SolrQuery object, if the return value is used.