{
    "XCLAIM": {
        "summary": "Changes, or acquires, ownership of a message in a consumer group, as if the message was delivered a consumer group member.",
        "complexity": "O(log N) with N being the number of messages in the PEL of the consumer group.",
        "group": "stream",
        "since": "5.0.0",
        "arity": -6,
        "function": "xclaimCommand",
        "command_flags": [
            "WRITE",
            "FAST"
        ],
        "acl_categories": [
            "STREAM"
        ],
        "command_tips": [
            "NONDETERMINISTIC_OUTPUT"
        ],
        "key_specs": [
            {
                "flags": [
                    "RW",
                    "UPDATE"
                ],
                "begin_search": {
                    "index": {
                        "pos": 1
                    }
                },
                "find_keys": {
                    "range": {
                        "lastkey": 0,
                        "step": 1,
                        "limit": 0
                    }
                }
            }
        ],
        "arguments": [
            {
                "name": "key",
                "type": "key",
                "key_spec_index": 0
            },
            {
                "name": "group",
                "type": "string"
            },
            {
                "name": "consumer",
                "type": "string"
            },
            {
                "name": "min-idle-time",
                "type": "string"
            },
            {
                "name": "ID",
                "type": "string",
                "multiple": true
            },
            {
                "token": "IDLE",
                "name": "ms",
                "type": "integer",
                "optional": true
            },
            {
                "token": "TIME",
                "name": "unix-time-milliseconds",
                "type": "unix-time",
                "optional": true
            },
            {
                "token": "RETRYCOUNT",
                "name": "count",
                "type": "integer",
                "optional": true
            },
            {
                "name": "force",
                "token": "FORCE",
                "type": "pure-token",
                "optional": true
            },
            {
                "name": "justid",
                "token": "JUSTID",
                "type": "pure-token",
                "optional": true
            },
            {
                "name": "lastid",
                "token": "LASTID",
                "type": "string",
                "optional": true
            }
        ],
        "reply_schema": {
            "description": "Stream entries with IDs matching the specified range.",
            "anyOf": [
                {
                    "description": "If JUSTID option is specified, return just an array of IDs of messages successfully claimed",
                    "type": "array",
                    "items": {
                        "description": "Entry ID",
                        "type": "string",
                        "pattern": "[0-9]+-[0-9]+"
                    }
                },
                {
                    "description": "array of stream entries that contains each entry as an array of 2 elements, the Entry ID and the entry data itself",
                    "type": "array",
                    "uniqueItems": true,
                    "items": {
                        "type": "array",
                        "minItems": 2,
                        "maxItems": 2,
                        "items": [
                            {
                                "description": "Entry ID",
                                "type": "string",
                                "pattern": "[0-9]+-[0-9]+"
                            },
                            {
                                "description": "Data",
                                "type": "array",
                                "items": {
                                    "type": "string"
                                }
                            }
                        ]
                    }
                }
            ]
        }
    }
}