Generates a new API key for the requesting user. The API key is returned in the response, and this is the only time it can be retrieved.
API key authentication. API keys should be passed using the format Bearer API_KEY.
The identifier to use for the api key, which will become the final component of the api key's resource name. This value should be 4-63 characters, and valid characters are /[a-z][0-9]-/.