You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: BackgroundSubtractorMOG2.m
    path of file: ./repos/mexopencv/+cv
    
    the code of the file until where you have to start completion: classdef BackgroundSubtractorMOG2 < handle
    %BACKGROUNDSUBTRACTORMOG2  Gaussian Mixture-based Background/Foreground Segmentation Algorithm
    %
    % The class imp
    
function bgImg = getBackgroundImage(this)
            %GETBACKGROUNDIMAGE  Computes a background image
            %
            %     bgImg = bs.getBackgroundImage()
            %
            % ## Output
            % * __bgImg__ The output background image, which is the mean of
            %   all background Gaussians.
            %
            % ### Note
            % Sometimes the background image can be very blurry, as it contain
            % the average background statistics.
            %
            % See also: cv.BackgroundSubtractorMOG2.apply
            %
            bgImg = BackgroundSubtractorMOG2_(this.id, 'getBackgroundImage');
        end