code: def init(**args: Any) -> None:
      """Initialize the collective library with arguments.
  
      Parameters
      ----------
      args: Dict[str, Any]
          Keyword arguments representing the parameters and their values.
  
          Accepted parameters:
            - xgboost_communicator: The type of the communicator. Can be set as an environment
              variable.
              * rabit: Use Rabit. This is the default if the type is unspecified.
              * federated: Use the gRPC interface for Federated Learning.
          Only applicable to the Rabit communicator (these are case sensitive):
            -- rabit_tracker_uri: Hostname of the tracker.
            -- rabit_tracker_port: Port number of the tracker.
            -- rabit_task_id: ID of the current task, can be used to obtain deterministic rank
               assignment.
            -- rabit_world_size: Total number of workers.
            -- rabit_hadoop_mode: Enable Hadoop support.
            -- rabit_tree_reduce_minsize: Minimal size for tree reduce.
            -- rabit_reduce_ring_mincount: Minimal count to perform ring reduce.
            -- rabit_reduce_buffer: Size of the reduce buffer.
            -- rabit_bootstrap_cache: Size of the bootstrap cache.
            -- rabit_debug: Enable debugging.
            -- rabit_timeout: Enable timeout.
            -- rabit_timeout_sec: Timeout in seconds.
            -- rabit_enable_tcp_no_delay: Enable TCP no delay on Unix platforms.
          Only applicable to the Rabit communicator (these are case-sensitive, and can be set as
          environment variables):
            -- DMLC_TRACKER_URI: Hostname of the tracker.
            -- DMLC_TRACKER_PORT: Port number of the tracker.
            -- DMLC_TASK_ID: ID of the current task, can be used to obtain deterministic rank
               assignment.
            -- DMLC_ROLE: Role of the current task, "worker" or "server".
            -- DMLC_NUM_ATTEMPT: Number of attempts after task failure.
            -- DMLC_WORKER_CONNECT_RETRY: Number of retries to connect to the tracker.
          Only applicable to the Federated communicator (use upper case for environment variables, use
          lower case for runtime configuration):
            -- federated_server_address: Address of the federated server.
            -- federated_world_size: Number of federated workers.
            -- federated_rank: Rank of the current worker.
            -- federated_server_cert: Server certificate file path. Only needed for the SSL mode.
            -- federated_client_key: Client key file path. Only needed for the SSL mode.
            -- federated_client_cert: Client certificate file path. Only needed for the SSL mode.
      """
      config = from_pystr_to_cstr(json.dumps(args))
      _check_call(_LIB.XGCommunicatorInit(config))
  
imports: import ctypes
  import json
  import logging
  import os
  import pickle
  from enum import IntEnum, unique
  from typing import Any, Dict, List, Optional
  import numpy
  from ._typing import _T
  from .core import _LIB, _check_call, build_info, c_str, from_pystr_to_cstr, py_str
label_desc: Use image node_id 1 for calling a global function with example usage: init() without return types