Function request_json 

pub async fn request_json(
    client: &Client,
    base_url: &str,
    api_key: &str,
    action: &str,
    method: Method,
    path: &str,
    query: Option<&Value>,
    body: Option<&Value>,
) -> Result<Value>

Issues one request against base_url using the caller-supplied client, and maps the transport/status outcome into a Result.

action is a friendly name (e.g. "clients", "official_list_sites") used only for the tracing span/logs this wraps the request in. Every dispatch path — the 8 named UnifiClient methods and the ~236 actions reachable only through ActionDispatcher — funnels through this one function, so this is the one place instrumentation needs to live for it to cover all of them consistently, rather than only the named methods.

Errors

Returns UnifiError::Timeout / UnifiError::Connect / UnifiError::Request for transport failures, UnifiError::Unauthorized / UnifiError::Forbidden / UnifiError::NotFound / UnifiError::RateLimited for the status codes UniFi controllers use for those conditions, and UnifiError::UnexpectedStatus for any other non-success status (its body is JSON when the response was JSON, otherwise the raw text). For a success status, returns UnifiError::EmptyBody for a GET with no response body, or UnifiError::Decode if the body isn’t valid JSON.