code: public static synchronized void createConnectionListener(String poolName, Object mcp, Object cl, Object mc,
                                                              boolean get, boolean prefill, boolean incrementer,
                                                              Throwable callstack)
     {
        if (get)
        {
           log.tracef("%s", new TraceEvent(poolName,
                                           Integer.toHexString(System.identityHashCode(mcp)),
                                           TraceEvent.CREATE_CONNECTION_LISTENER_GET,
                                           Integer.toHexString(System.identityHashCode(cl)),
                                           Integer.toHexString(System.identityHashCode(mc)),
                                           !confidential && callstack != null ? toString(callstack) : ""));
        }
        else if (prefill)
        {
           log.tracef("%s", new TraceEvent(poolName,
                                           Integer.toHexString(System.identityHashCode(mcp)),
                                           TraceEvent.CREATE_CONNECTION_LISTENER_PREFILL,
                                           Integer.toHexString(System.identityHashCode(cl)),
                                           Integer.toHexString(System.identityHashCode(mc)),
                                           !confidential && callstack != null ? toString(callstack) : ""));
        }
        else if (incrementer)
        {
           log.tracef("%s", new TraceEvent(poolName,
                                           Integer.toHexString(System.identityHashCode(mcp)),
                                           TraceEvent.CREATE_CONNECTION_LISTENER_INCREMENTER,
                                           Integer.toHexString(System.identityHashCode(cl)),
                                           Integer.toHexString(System.identityHashCode(mc)),
                                           !confidential && callstack != null ? toString(callstack) : ""));
        }
     }
docs: Create connection listener
  @param poolName The name of the pool
  @param mcp The managed connection pool
  @param cl The connection listener
  @param mc The managed connection
  @param get A GET operation
  @param prefill A PREFILL operation
  @param incrementer An INCREMENTER operation
  @param callstack The call stack