add a level to the database . concode_field_sep List<Level> levels concode_elem_sep Map<String,List<ITopicNode>> topicsKeys concode_elem_sep Map<Integer,List<ITopicNode>> topics concode_field_sep List<SpecTopic> getAllSpecTopics concode_elem_sep boolean isUniqueSpecTopic concode_elem_sep List<Integer> getTopicIds concode_elem_sep List<ITopicNode> getAllTopicNodes concode_elem_sep List<T> getUniqueTopicsFromSpecTopics concode_elem_sep void setDatabaseDuplicateIds concode_elem_sep List<Level> getAllLevels concode_elem_sep List<ITopicNode> getTopicNodesForKey concode_elem_sep List<SpecNode> getAllSpecNodes concode_elem_sep Set<String> getIdAttributes concode_elem_sep List<T> getAllTopics concode_elem_sep List<T> getAllTopics concode_elem_sep List<ITopicNode> getTopicNodesForTopicID
void function ( final Level arg0 ) { if ( arg0 == null ) return ; levels . add ( arg0 ) ; }