Index strings (#188)

## Problem

Current Python client documentation automation plans consume Python
client docstrings. However, current docstrings are sometimes incomplete
or unclear.

## Solution

This PR attempts to clarify and complete Python client docstrings.

## Type of Change

- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [ ] This change requires a documentation update
- [ ] Infrastructure change (CI configs, etc)
- [x ] Non-code change (docs, etc)
- [ ] None of the above: (explain here)

## Test Plan

Describe specific steps for validating this change.

Author: byronnlandry