The UpdateTemplate method can be used to update a specified template and can be useful if you need to make changes to any settings or content to the template.
Images must be uploaded separately.
||This is the username from your API key. It is in the format of an email address and will look similar to apiuser‑email@example.com
||This is the password from your API key.
||This is the template object; it can be used to set properties relating to the template you are creating.