session_post_method_params_callback.md

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* `method` {string}
* `params` {Object}
* `callback` {Function}

Posts a message to the inspector back-end. `callback` will be notified when
a response is received. `callback` is a function that accepts two optional
arguments: error and message-specific result.

```js
session.post('Runtime.evaluate', { expression: '2 + 2' },
             (error, { result }) => console.log(result));
// Output: { type: 'number', value: 4, description: '4' }
```

The latest version of the V8 inspector protocol is published on the
[Chrome DevTools Protocol Viewer][].

Node.js inspector supports all the Chrome DevTools Protocol domains declared
by V8. Chrome DevTools Protocol domain provides an interface for interacting
with one of the runtime agents used to inspect the application state and listen
to the run-time events.