def METHOD_NAME(segment_name, change_number, fetch_options):
    if segment_name == 'segmentA' and METHOD_NAME._count_a == 0:
        METHOD_NAME._count_a = 1
        return {'name': 'segmentA', 'added': ['key1', 'key2', 'key3'], 'removed': [],
                'since': -1, 'till': 123}
    if segment_name == 'segmentB' and METHOD_NAME._count_b == 0:
        METHOD_NAME._count_b = 1
        return {'name': 'segmentB', 'added': ['key4', 'key5', 'key6'], 'removed': [],
                'since': -1, 'till': 123}
    if segment_name == 'segmentC' and METHOD_NAME._count_c == 0:
        METHOD_NAME._count_c = 1
        return {'name': 'segmentC', 'added': ['key7', 'key8', 'key9'], 'removed': [],
                'since': -1, 'till': 123}
    return {'added': [], 'removed': [], 'since': 123, 'till': 123}