{
    "description": "Document type (DBRef sub-documents)",
    "bson_type": "0x03",
    "valid": [
        {
            "description": "DBRef",
            "canonical_bson": "37000000036462726566002b0000000224726566000b000000636f6c6c656374696f6e00072469640058921b3e6e32ab156a22b59e0000",
            "canonical_extjson": "{\"dbref\": {\"$ref\": \"collection\", \"$id\": {\"$oid\": \"58921b3e6e32ab156a22b59e\"}}}"
        },
        {
            "description": "DBRef with database",
            "canonical_bson": "4300000003646272656600370000000224726566000b000000636f6c6c656374696f6e00072469640058921b3e6e32ab156a22b59e0224646200030000006462000000",
            "canonical_extjson": "{\"dbref\": {\"$ref\": \"collection\", \"$id\": {\"$oid\": \"58921b3e6e32ab156a22b59e\"}, \"$db\": \"db\"}}"
        },
        {
            "description": "DBRef with database and additional fields",
            "canonical_bson": "48000000036462726566003c0000000224726566000b000000636f6c6c656374696f6e0010246964002a00000002246462000300000064620002666f6f0004000000626172000000",
            "canonical_extjson": "{\"dbref\": {\"$ref\": \"collection\", \"$id\": {\"$numberInt\": \"42\"}, \"$db\": \"db\", \"foo\": \"bar\"}}"
        },
        {
            "description": "DBRef with additional fields",
            "canonical_bson": "4400000003646272656600380000000224726566000b000000636f6c6c656374696f6e00072469640058921b3e6e32ab156a22b59e02666f6f0004000000626172000000",
            "canonical_extjson": "{\"dbref\": {\"$ref\": \"collection\", \"$id\": {\"$oid\": \"58921b3e6e32ab156a22b59e\"}, \"foo\": \"bar\"}}"
        },
        {
            "description": "Document with key names similar to those of a DBRef",
            "canonical_bson": "3e0000000224726566000c0000006e6f742d612d646272656600072469640058921b3e6e32ab156a22b59e022462616e616e6100050000007065656c0000",
            "canonical_extjson": "{\"$ref\": \"not-a-dbref\", \"$id\": {\"$oid\": \"58921b3e6e32ab156a22b59e\"}, \"$banana\": \"peel\"}"
        },
        {
            "description": "DBRef with additional dollar-prefixed and dotted fields",
            "canonical_bson": "48000000036462726566003c0000000224726566000b000000636f6c6c656374696f6e00072469640058921b3e6e32ab156a22b59e10612e62000100000010246300010000000000",
            "canonical_extjson": "{\"dbref\": {\"$ref\": \"collection\", \"$id\": {\"$oid\": \"58921b3e6e32ab156a22b59e\"}, \"a.b\": {\"$numberInt\": \"1\"}, \"$c\": {\"$numberInt\": \"1\"}}}"
        },
        {
            "description": "Sub-document resembles DBRef but $id is missing",
            "canonical_bson": "26000000036462726566001a0000000224726566000b000000636f6c6c656374696f6e000000",
            "canonical_extjson": "{\"dbref\": {\"$ref\": \"collection\"}}"
        },
        {
            "description": "Sub-document resembles DBRef but $ref is not a string",
            "canonical_bson": "2c000000036462726566002000000010247265660001000000072469640058921b3e6e32ab156a22b59e0000",
            "canonical_extjson": "{\"dbref\": {\"$ref\": {\"$numberInt\": \"1\"}, \"$id\": {\"$oid\": \"58921b3e6e32ab156a22b59e\"}}}"
        },
        {
            "description": "Sub-document resembles DBRef but $db is not a string",
            "canonical_bson": "4000000003646272656600340000000224726566000b000000636f6c6c656374696f6e00072469640058921b3e6e32ab156a22b59e1024646200010000000000",
            "canonical_extjson": "{\"dbref\": {\"$ref\": \"collection\", \"$id\": {\"$oid\": \"58921b3e6e32ab156a22b59e\"}, \"$db\": {\"$numberInt\": \"1\"}}}"
        }
    ]
}