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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_issues_url(page, after):
 """Returns github API URL for querying tags."""

    template = '{base_url}/{owner}/{repo}/issues?state=closed&per_page=100&page={page}&since={after}'
    return template.format(page=page, after=after.isoformat(), **API_PARAMS)