def project_process(index, start, end):
    """Compute the metrics for the project process section of the enriched
    git index.

    Returns a dictionary containing "bmi_metrics", "time_to_close_metrics",
    "time_to_close_review_metrics" and patchsets_metrics as the keys and
    the related Metrics as the values.

    :param index: index object
    :param start: start date to get the data from
    :param end: end date to get the data upto
    :return: dictionary with the value of the metrics
    """
    results = {'bmi_metrics': [], 'time_to_close_metrics': [],
        'time_to_close_review_metrics': [], 'patchsets_metrics': []}
    return results
