I'm trying to generate a python client for the REST API using https://github.com/openapi-generators/openapi-python-client/

Getting it to work requires a few tweaks in the generator but I think there is also a bug in the actual openapi JSON.

The generator issued an exception when looking at the schema for Property (https://github.com/wikimedia/mediawiki-extensions-Wikibase/blob/e45d4f725e25a95ec2b034238fd3736f19053a16/repo/rest-api/specs/global/schemas.json).

For some reason the API specifies the statements of the Property differently from the statements of Item (which parses correctly by the tool). I think they should be the same? I was able to get the tool to work by just deleting the selection of the Property schema:

				"type": "object",
				"additionalProperties": {
					"type": "array",
					"items": {
						"allOf": [
							{ "$ref": "#/Statement" },
							{
								"properties": {
									"id": {
										"example": "P31$6403c562-401a-2b26-85cc-8327801145e1"
									}
								}
							}
						]
					}
				}

and replacing it with

				"type": "object",
				"additionalProperties": {
					"type": "array",
					"items": { "$ref": "#/Statement" }
				}

from the Item block above.

The id property that is being added seems redundant withe the id field in the Statement schema anyways? I don't think this is a breaking change.