Save file in Sharepoint with x++ code

It often happens that you have to create and save a file in Sharepoint from Dynamics 365 FO. Below is a method that, taking the file stream and filename as input, allows you to save this file in a specific Sharepoint folder.

/// <summary>
/// Save file in specific Sharepoint folder
/// </summary>
/// <param name = "_stream">Stream of the file</param>
/// <param name = "_filename">Filename</param>
public void saveFile(System.IO.MemoryStream _stream, Filename _filename)
{        
    /* Example */
    str site = '/sites/OneERPEnvisioningProject';
    str folder = 'Documenti condivisi/Master Data/Test';
    System.UriBuilder builder = new System.UriBuilder('orgname.sharepoint.com');
    str host = builder.Host;
        
    str extId = xUserInfo::getCurrentUserExternalId();     
           
   
	   Microsoft.Dynamics.AX.Framework.FileManagement.SharePointDocumentStorageProvider storageProvider = new Microsoft.Dynamics.AX.Framework.FileManagement.SharePointDocumentStorageProvider('orgname.sharepoint.com', site, folder, extId);
        storageProvider.ProviderId = DocuStorageProviderType::SharePoint;
    _stream.Position = 0;        

    boolean fileExists;         
    fileExists = storageProvider.FileExists(_filename);
    if(fileExists)
    {         
        if(_stream.Length  > 0  )
        {
           storageProvider.SaveFileWithOverwrite(newGuid(), _filename, 'application/csv', _stream);
        }
    }
    else
    {
        if(_stream.Length  > 0  )
        {
        storageProvider.SaveFile(newGuid(), _filename, 'application/csv', _stream);
        }
    }
}