code: public static void setupTable(String name, String cql)
      {
          if (Schema.instance.getCFMetaData(AUTH_KS, name) == null)
          {
              try
              {
                  CFStatement parsed = (CFStatement)QueryProcessor.parseStatement(cql);
                  parsed.prepareKeyspace(AUTH_KS);
                  CreateTableStatement statement = (CreateTableStatement) parsed.prepare().statement;
                  CFMetaData cfm = statement.getCFMetaData().copy(CFMetaData.generateLegacyCfId(AUTH_KS, name));
                  assert cfm.cfName.equals(name);
                  MigrationManager.announceNewColumnFamily(cfm);
              }
              catch (Exception e)
              {
                  throw new AssertionError(e);
              }
          }
      }
docs: Set up table from given CREATE TABLE statement under system_auth keyspace, if not already done so.
  
  @param name name of the table
  @param cql CREATE TABLE statement