DynamoDB ExpressionAttributeNames documentation has no reference manual

[andreas-lundgren-qlucore]

Describe the issue

Reading about ExpressionAttributeNames for example DynamoDB::update_item does not provide you with any information about what actually goes into this parameter. I can see that it's a dict, but there is no description of what's actually in the keys and what is in the values. If you don't know who to create this parameter, you will still not know after reading the description or the referenced Amazon DynamoDB Developer Guide

Links

https://boto3.amazonaws.com/v1/documentation/api/latest/reference/services/dynamodb/table/update_item.html