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: svgOffset.m
    path of file: ./repos/fieldtrip/external/plot2svg
    
    the code of the file until where you have to start completion: function svgOffset(s, source, offset, result)
% Adds a feOffset SVG filter
% PRELIMINARY IMPLEMENTATION (Parameters may change)
%
% svgOffset(s, source, offset, result)
% Parameters:
%   s : Array of plot object handles
%   source : Any previous defined filter result string, 'SourceGraphic',
%            or 'SourceAlpha'.
%   offset : Offset value [x y]
%   result : String that identifies the filter result for following filter
%            stages.   

    
function svgOffset(s, source, offset, result)
% Adds a feOffset SVG filter
% PRELIMINARY IMPLEMENTATION (Parameters may change)
%
% svgOffset(s, source, offset, result)
% Parameters:
%   s : Array of plot object handles
%   source : Any previous defined filter result string, 'SourceGraphic',
%            or 'SourceAlpha'.
%   offset : Offset value [x y]
%   result : String that identifies the filter result for following filter
%            stages.   
for i = 1:length(s)
    userdata = get(s(i),'UserData');
    if isfield(userdata, 'svg') && isfield(userdata.svg, 'Filter')
        next = length(userdata.svg.Filter) + 1;
    else
        next = 1;
    end