New creates a new provider function.

AuthLegacy is using the access token endpoint from the ix-api schema.

AuthOAuth2 is using the OAuth2 token endpoint with a client credentials workflow.

EnvAPIAuth selectes the authentication workflow.

EnvAPIHost is the environment variable for the host implementing the API including the schema and version.

EnvAPIKey environment variable for the API key used by legacy auth.

EnvAPISecret environment variable for the API secret used by legacy auth.

EnvOAuth2Scopes is a comma separated list of scopes.

EnvOAuth2TokenURL is the URL of the OAuth2 endpoint.