ResponseNewParamsInputUnion can not execute UnmarshalJSON

[yp05327]

Test code:

test := responses.ResponseNewParamsInputUnion{
	OfInputItemList: []responses.ResponseInputItemUnionParam{
		{
			OfInputMessage: &responses.ResponseInputItemMessageParam{
				Role: string(openai.MessageRoleUser),
				Content: []responses.ResponseInputContentUnionParam{
					{
						OfInputText: &responses.ResponseInputTextParam{
							Text: “test”,
						},
					},
				},
			},
		},
	},
}

b, err := test.MarshalJSON()
if err != nil {
	fmt.Println("test MarshalJSON err: ", err)
}
err = test.UnmarshalJSON(b)
if err != nil {
	fmt.Println("test UnmarshalJSON err: ", err)
}

result:

test UnmarshalJSON err:  apijson: was not able to coerce type as union

go version: 1.24
sdk version: v2.1.1