DEPRECATED: Returns the metrics belonging to a given Lead ID.## ExampleTo fetch the metrics belonging to a lead with the ID "jPlz8TM628rzyCRPqrtcvm", send an authenticated GET request to the following URL:https://api.yelp.com/v3/leads/jPlz8TM628rzyCRPqrtcvm/metricsFor the above request, a successful GET call would return the lead metrics if they exist in our system.A sample response is shown in the example response box on the right under "200 - Metrics"#### API Responsesjson{ "metrics": { "cost_per_lead": { "value": 0, "currency_code": "USD" } } }