old_contents: from .main import convert_files, convert_meshes
  
  __all__ = [
      'convert_files',
      'convert_meshes',
  ]
  
new_contents: from .main import convert_file, convert_files, convert_mesh, convert_meshes
  
  __all__ = [
      'convert_file',
      'convert_files',
      'convert_mesh',
      'convert_meshes',
  ]
  
subject: Add more exposed methods