Amazon Ad API - Error while downloading a Report using Python API

Question

I am trying to access a report called Sponsored products using Amazon AD API in python.

https://python-amazon-ad-api.readthedocs.io/en/latest/api/reports.html#ad_api.api.Reports.Reports.post_report

The code is as below.

data = {
        "name":"",
        "startDate":"2023-08-01",
        "endDate":"2023-08-20",
        "configuration":{
            "adProduct":"SPONSORED_PRODUCTS",
            "groupBy":["campaign","adGroup"],
            "columns":["adGroupId","campaignId", "impressions", "clicks", "cost", "purchases1d", "purchases7d", "purchases14d", "purchases30d","date"],
            "reportTypeId":"spCampaigns",
            "timeUnit":"DAILY",
            "format":"GZIP_JSON"
        }
    }
    
result = Reports.post_report(body = data)

However am getting an error as below,

Traceback (most recent call last):
  File "/Users/***/Documents/codeBase/amazon-selling-central-integration/amz_ad_api/test-python-ad-report.py", line 38, in <module>
    result = Reports.post_report(body = data)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/ad_api/base/helpers.py", line 21, in wrapper
    return function(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^
TypeError: Reports.post_report() missing 1 required positional argument: 'self'

I am not sure what to be is passed in the Self. The example document also doesn't list something like that. It would be great to have some help