• Package Name: azure-cosmos
• Package Version: 4.2.0
• Operating System: Arch Linux
• Python Version: Python 3.9.7

Describe the bug
The docs of azure.cosmos.database.DatabaseProxy.get_user_client state the method raises an exception if the given user couldn't be retrieved. On my system such an exception is not thrown unless I call read() on the resulting UserProxy instance

azure.cosmos.database.get_user_client doc string:

    """Get a `UserProxy` for a user with specified ID.

    :param user: The ID (name), dict representing the properties or :class:`UserProxy`
        instance of the user to be retrieved.
    :returns: A `UserProxy` instance representing the retrieved user.
    :raises ~azure.cosmos.exceptions.CosmosHttpResponseError: If the given user couldn't be retrieved.
    :rtype: ~azure.cosmos.UserProxy
    """

To Reproduce
Execute following test script:

import os

from azure.cosmos import CosmosClient

url = os.environ["ACCOUNT_URL"]
key = os.environ["ACCOUNT_KEY"]
client = CosmosClient(url, key)
database = client.create_database("cosmosdb_bug_test_db")

user_proxy = database.get_user_client(
    "non-existant-user"
)  # this statement does not raise an exception
user = (
    user_proxy.read()
)  # this statement raises the azure.cosmos.exceptions.CosmosResourceNotFoundError exception

Expected behavior
L10 raises the exception.
If not, the documentation should be updated to reflect that get_user_client does not actually raise the exception. Similar concerns might exist for other Proxy objects and their doc strings (CosmosClient.get_database_client appears ok).

Additional context
I tested this with mcr.microsoft.com/cosmosdb/linux/azure-cosmos-emulator running locally, though I expect the same behavior on an Azure hosted cosmosdb.