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: mergeOptions.m
    path of file: ./repos/SGDLibrary/tool
    
    the code of the file until where you have to start completion: function opts = mergeOptions(opts1, opts2)
% Merges two options structures with one having precedence over the other.
%
% function opts = mergeOptions(opts1, opts2)

    
function opts = mergeOptions(opts1, opts2)
% Merges two options structures with one having precedence over the other.
%
% function opts = mergeOptions(opts1, opts2)
%
% input: opts1 and opts2 are two structures.
% output: opts is a structure containing all fields of opts1 and opts2.
% Whenever a field is present in both opts1 and opts2, it is the value in
% opts2 that is kept.
%
% The typical usage is to have opts1 contain default options and opts2
% contain user-specified options that overwrite the defaults.
%
% See also: getGlobalDefaults

% This file is part of Manopt: www.manopt.org.
% Original author: Nicolas Boumal, Dec. 30, 2012.
% Contributors: 
% Change log: 


    if isempty(opts1)
        opts1 = struct();
    end