https://solr.apache.org/docs/5_3_0/solr-core/org/apache/solr/util/class-use/SolrLogLayout.TG.html
Uses of Interface org.apache.solr.util.SolrLogLayout.TG (Solr 5.3.0 API)
https://solr.apache.org/docs/5_3_0/solr-core/org/apache/solr/util/SolrLogLayout.html
SolrLogLayout (Solr 5.3.0 API)
solrapi