## Description
As a part of google sheet scope limitation, the email address is being
added in datasource configuration. The email address
is being stored in a property, an element in properties
(`List<Property>`) with key: 'emailAddress' and value: (<emailId>) .
In order to retrieve this property a GET call to endpoint
`https://www.googleapis.com/drive/v3/about?fields=user` is being made.
This property is being saved while google sheet datasource gets
authorised, after access toke retrieval from cloud services.
in the endpoint `/saas/{datasourceId}/token`.
Since the flow is specific to google sheets, the main code is
implemented in googlesheetPluginExecutor. The flow has three steps
- Getting access token from datasourceConfiguration
- making the call to googleApis and obtaining the email address
- saving it back into datasource configuration
The authorisation flow itself saves the datasource later on.
> TL;DR Adding emailAddress in properties of datasource configuration
when google sheets is authorised.
Fixes#21902
- New feature (non-breaking change which adds functionality)
## This has been tested
- Manual
- JUnit
## Checklist:
### Dev activity
- [x] My code follows the style guidelines of this project
- [ ] I have performed a self-review of my own code
- [x] I have commented my code, particularly in hard-to-understand areas
- [x] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [x] New and existing unit tests pass locally with my changes
- [x] PR is being merged under a feature flag
77aeca27a0