How to download and setup xmlbuilder2
Open terminal and run command
                                            git clone https://github.com/oozcitak/xmlbuilder2.git
                                        
                                        git clone is used to create a copy or clone of xmlbuilder2 repositories.
                                        You pass git clone a repository URL. it supports a few different network protocols and corresponding URL formats.
Also you may download zip file with xmlbuilder2 https://github.com/oozcitak/xmlbuilder2/archive/master.zip
Or simply clone xmlbuilder2 with SSH
                                            [email protected]:oozcitak/xmlbuilder2.git                                    
                                    If you have some problems with xmlbuilder2
You may open issue on xmlbuilder2 support forum (system) here: https://github.com/oozcitak/xmlbuilder2/issuesSimilar to xmlbuilder2 repositories
Here you may see xmlbuilder2 alternatives and analogs
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