code: def upload(self, localfile: str, remotefile: str, overwrite: bool = True, permission: str = '', **kwargs):
          
          if self.nosub:
              print("too complicated to show the code, read the source :), sorry.")
              return None
          else:
              log = self._io.upload(localfile, remotefile, overwrite, permission, **kwargs)
       
          return log
docs: This method uploads a local file to the SAS servers file system.
  
          :param localfile: path to the local file 
          :param remotefile: path to remote file to create or overwrite
          :param overwrite: overwrite the output file if it exists?
          :param permission: permissions to set on the new file. See SAS Filename Statement Doc for syntax
          :return: SAS Log