{
    "HELLO": {
        "summary": "Handshake with Redis",
        "complexity": "O(1)",
        "group": "connection",
        "since": "6.0.0",
        "arity": -1,
        "function": "helloCommand",
        "history": [
            [
                "6.2.0",
                "`protover` made optional; when called without arguments the command reports the current connection's context."
            ]
        ],
        "command_flags": [
            "NOSCRIPT",
            "LOADING",
            "STALE",
            "FAST",
            "NO_AUTH",
            "SENTINEL",
            "ALLOW_BUSY"
        ],
        "acl_categories": [
            "CONNECTION"
        ],
        "arguments": [
            {
                "name": "arguments",
                "type": "block",
                "optional": true,
                "arguments": [
                    {
                        "name": "protover",
                        "type": "integer"
                    },
                    {
                        "token": "AUTH",
                        "name": "username_password",
                        "type": "block",
                        "optional": true,
                        "arguments": [
                            {
                                "name": "username",
                                "type": "string"
                            },
                            {
                                "name": "password",
                                "type": "string"
                            }
                        ]
                    },
                    {
                        "token": "SETNAME",
                        "name": "clientname",
                        "type": "string",
                        "optional": true
                    }
                ]
            }
        ]
    }
}