oss2/api.py [1361:1367]:
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        headers = http.CaseInsensitiveDict(headers)

        if params and Bucket.VERSIONID in params:
            headers[OSS_COPY_OBJECT_SOURCE] = '/' + source_bucket_name + \
                '/' + urlquote(source_key, '') + '?versionId=' + params[Bucket.VERSIONID]
        else:
            headers[OSS_COPY_OBJECT_SOURCE] = '/' + source_bucket_name + '/' + urlquote(source_key, '')
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oss2/api.py [1747:1753]:
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        headers = http.CaseInsensitiveDict(headers)

        if params and Bucket.VERSIONID in params:
            headers[OSS_COPY_OBJECT_SOURCE] = '/' + source_bucket_name + \
                '/' + urlquote(source_key, '') + '?versionId=' + params[Bucket.VERSIONID]
        else:
            headers[OSS_COPY_OBJECT_SOURCE] = '/' + source_bucket_name + '/' + urlquote(source_key, '')
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