WIP - Fix tip of the branch to work with latest DocSum microservice changes

[ashahba]

Description

The summary of the proposed changes as long as the relevant motivation and context.

Issues

List the issue or RFC link this PR is working on. If there is no such link, please mark it as n/a.

Type of change

List the type of change like below. Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds new functionality)
• Breaking change (fix or feature that would break existing design and interface)
• Others (enhancement, documentation, validation, etc.)

Dependencies

List the newly introduced 3rd party dependency if exists.

Tests

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[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
comps/cores/mega/gateway.py	0.00%	1 Missing ⚠️

Files with missing lines	Coverage Δ
comps/cores/mega/gateway.py	28.14% <0.00%> (ø)

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[eero-t]

@ashahba There's no gateway.py anymore. Is this still relevant?