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: cleanFeedTitle.m
    path of file: ./repos/plotly_matlab/plotly/plotlyfig_aux/helpers
    
    the code of the file until where you have to start completion: function cleanFeedTitle(obj)
% cleanFeedTitle checks all annotations for a title. The first title found 
% is used as the layout.title (Plotly title). This should correspond to the 
% title of the first plot added to the MATLAB figure. cleanFeedTitle should
% be called after the style keys have been stripped --> it must override 

    
function cleanFeedTitle(obj)
% cleanFeedTitle checks all annotations for a title. The first title found 
% is used as the layout.title (Plotly title). This should correspond to the 
% title of the first plot added to the MATLAB figure. cleanFeedTitle should
% be called after the style keys have been stripped --> it must override 
% certain style keys as a workaround.

% -- Single plot figure -- % 

% If only a single plot is present, the title will be set as the Plotly 
% title.

% -- Multiple plot figure -- % 

% If multiple plots are present, only the text of the title is used so 
% that the title appears in the feed. The text color is set so that the 
% Plotly title is hidden from the graph, favouring the 
% annotation title (with its flexibilty over positioning). 

    if ~isempty(obj.State.Figure.NumTexts)
        
        % grab the title of the first plot added to the figure. 
        first_title_index = find(arrayfun(@(x)(isequal(x.Title, 1)), ...
            obj.State.Text), 1, 'first');
        
        if ~isempty(first_title_index)
           
            first_title_handle = obj.State.Text(first_title_index).Handle; 
            
            % grab the string of the first title
            annotation_index = obj.getAnnotationIndex(first_title_handle); 
            first_title = obj.layout.annotations{annotation_index}.text;
            
            % use that as the filename
            obj.layout.title = first_title;

            % check for a single plot
            if (obj.State.Figure.NumPlots == 1)
                
                % grab the font style if not stripped
                if ~obj.PlotOptions.Strip
                    obj.layout.titlefont = ...
                        obj.layout.annotations{annotation_index}.font;
                end