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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_changelog_types(pr_payload):
 """ Fetch the labels from the PR and process the ones related to the changelog. """

    changelog_labels = []
    for name in get_pr_labels(pr_payload):
        if name.startswith(CHANGELOG_LABEL_PREFIX):
            # only add the name, e.g. for `changelog/Added` it's just `Added`
            changelog_labels.append(name.split(CHANGELOG_LABEL_PREFIX)[1])

    return changelog_labels