Attaching metadata to the s3 .tfstate file

I would like to set some metadata in the s3 bucket .tfstate file when I run

terraform init
*-backend-config=“metadata=<some_metadata__kv_pair>” *

the *-backend-config=“metadata=<some_metadata_kv_pair>” * directive is what I am hoping exists in some form.

I do understand that there would be a backslash at the end of each line but this forum engine appears to remove it in the post.

Is there somewhere that I can research this or is there currently no method available in the terraform init process?