add missing phpdoc
add missing phpdoc

floriansemm/SolrBundle,frank-und-freunde/SolrBundle,drdk/SolrBundle,clarity-project/SolrBundle,drdk/SolrBundle,clarity-project/SolrBundle,starsystemsindia/SolrBundle,cegeka/fd-solr-bundle,zquintana/SunSearchBundle,zquintana/SunSearchBundle,floriansemm/SolrBundle,andythorne/SolrBundle