docs: function authenticateStragglers(self, connection, callback) {
        // Get any non authenticated connections
        var connections = self.nonAuthenticatedConnections.slice(0);
        var nonAuthenticatedConnections = self.nonAuthenticatedConnections;
        self.nonAuthenticatedConnections = [];
  
        // Establish if the connection need to be authenticated
        // Add to authentication list if
        // 1. we were in an authentication process when the operation was executed
        // 2. our current authentication timestamp is from the workItem one, meaning an auth has happened
        if (
          connection.workItems.length === 1 &&
          (connection.workItems[0].authenticating === true ||
            (typeof connection.workItems[0].authenticatingTimestamp === 'number' &&
              connection.workItems[0].authenticatingTimestamp !== self.authenticatingTimestamp))
        ) {
          // Add connection to the list
          connections.push(connection);
        }
  
        // No connections need to be re-authenticated
        if (connections.length === 0) {
          // Release the connection back to the pool
          moveConnectionBetween(connection, self.inUseConnections, self.availableConnections);
          // Finish
          return callback();
        }
  
        // Apply re-authentication to all connections before releasing back to pool
        var connectionCount = connections.length;
        // Authenticate all connections
        for (var i = 0; i < connectionCount; i++) {
          reauthenticate(self, connections[i], function() {
            connectionCount = connectionCount - 1;
  
            if (connectionCount === 0) {
              // Put non authenticated connections in available connections
              self.availableConnections = self.availableConnections.concat(
                nonAuthenticatedConnections
              );
              // Release the connection back to the pool
              moveConnectionBetween(connection, self.inUseConnections, self.availableConnections);
              // Return
              callback();
            }
          });
        }
      }