docs: def start(self):
          """
          Starts the TCP server.
  
          :return: Method success.
          :rtype: bool
          """
  
          if self.__online:
              raise foundations.exceptions.ServerOperationError(
                  "{0} | '{1}' TCP Server is already online!".format(self.__class__.__name__, self))
  
          try:
              self.__server = SocketServer.TCPServer((self.__address, self.__port), self.__handler)
              self.__worker = threading.Thread(target=self.__server.serve_forever)
              self.__worker.setDaemon(True)
              self.__worker.start()
              self.__online = True
              LOGGER.info(
                  "{0} | TCP Server successfully started with '{1}' address on '{2}' port using '{3}' requests handler!".format(
                      self.__class__.__name__, self.__address, self.__port, self.__handler.__name__))
              return True
          except socket.error as error:
              if error.errno in (errno.EADDRINUSE, errno.EADDRNOTAVAIL):
                  LOGGER.warning(
                      "!> {0} | Cannot start TCP Server, address is already in use on port '{1}'!".format(
                          self.__class__.__name__, self.__port))
              else:
                  raise error