Lambda extension environment variables

This is really just some context for myself so I don't have to write code to sanity-check myself each time. Here are the environment variables available to an AWS Lambda extension in the provided.al2 runtime:

Name	Value
AWS_ACCESS_KEY_ID	ASIAY24FZKAOHEXAMPLE
AWS_DEFAULT_REGION	ap-southeast-2
AWS_LAMBDA_FUNCTION_MEMORY_SIZE	1769
AWS_LAMBDA_FUNCTION_NAME	test-Function-Oir9IIuvmE3E
AWS_LAMBDA_FUNCTION_VERSION	$LATEST
AWS_LAMBDA_INITIALIZATION_TYPE	on-demand
AWS_LAMBDA_RUNTIME_API	127.0.0.1:9001
AWS_REGION	ap-southeast-2
AWS_SECRET_ACCESS_KEY	Y8fuc8UvsbAO/JEXAMPLE+qEO2lasMzB
AWS_SESSION_TOKEN	IQoJb3JpZ2lumFwLX...EXAMPLE
LANG	en_US.UTF-8
LD_LIBRARY_PATH	/lib64:/usr/lib64:/var/runtime:/var/runtime/lib:/var/task:/var/task/lib:/opt/lib
PATH	/usr/local/bin:/usr/bin/:/bin:/opt/bin
TZ	:UTC

In addition to the above, here are the environment variables that the function runtime has:

Name	Value
AWS_LAMBDA_LOG_GROUP_NAME	/aws/lambda/test-Function-Oir9IIuvmE3E
AWS_LAMBDA_LOG_STREAM_NAME	2022/12/15/[$LATEST]534601edddcb4ad8a23042e2d6042f68
AWS_XRAY_CONTEXT_MISSING	LOG_ERROR
AWS_XRAY_DAEMON_ADDRESS	169.254.79.129:2000
LAMBDA_RUNTIME_DIR	/var/runtime
LAMBDA_TASK_ROOT	/var/task
_AWS_XRAY_DAEMON_ADDRESS	169.254.79.129
_AWS_XRAY_DAEMON_PORT	2000
_HANDLER	myhandler