OptionalconnectionThe connection name to use. This is required to identify the external connection.
OptionalheadersAdditional headers for the request. If not provided, only auth headers from connections would be passed.
OptionaljsonThe JSON payload to send in the request body.
OptionalmethodThe HTTP method to use (e.g., 'GET', 'POST').
OptionalparamsQuery parameters for the request.
OptionalpathThe relative path for the API endpoint. This is required.
OptionalsubOptional subdomain to prepend to the connection URL's host. If provided, this will be
added as a prefix to the connection URL's host. For example, if the connection URL is
https://api.example.com/v1 and sub_domain is "custom", the resulting URL will be
https://custom.api.example.com/v1.
Simple Proto message for testing