code: function sendRequest(operationName, body, callback, context) {
  		if (_.isFunction(body)) {
  			context = callback;
  			callback = body;
  			body = undefined;
  		}
  		body || (body = {});
  		body = new Buffer(_.isString(body) ? body : JSON.stringify(body));
  
  		var httpOpts = {
  			host: SERVICE_NAME.toLowerCase() + '.' + region + '.amazonaws.com',
  			port: 443,
  			path: '/',
  			method: 'POST',
  			headers: {
  				'x-amz-date': basicISODate(),
  				'x-amz-target': SERVICE_NAME + '_' + API_VERSION + '.' + operationName,
  				'Content-Type': 'application/x-amz-json-1.0'
  			}
  		};
  		signRequest(httpOpts, body);
  
  		httpRequest(httpOpts, body, function(error, responseBody, httpResponse) {
  			var json;
  			try {
  				json = JSON.parse(responseBody);
  			} catch (parseError) {
  				if (!error) error = parseError;
  			}
  
  			if (_.isFunction(callback)) callback.call(context || httpResponse, error, json || responseBody);
  		}, true);
  	}
docs: Underlying method that builds the request before sending it and relays the response to the callback.
  
  @method sendRequest
  @private
  @param {String} operationName Name of the DynamoDB operation to request.
  @param {Object|String} [body='{}'] Body of the request.
  @param {Function} [callback] Callback function to call after receiving the response.
  @param {Object} [context=httpResponseObject] Context in which the callback should be executed.
  Defaults to the underlying HTTP response object.