code: def _inline_tcl_xfer(
          self, source_file=None, source_config=None, dest_file=None, file_system=None
      ):
          
          if source_file:
              return self._xfer_file(
                  source_file=source_file,
                  dest_file=dest_file,
                  file_system=file_system,
                  TransferClass=InLineTransfer,
              )
          if source_config:
              return self._xfer_file(
                  source_config=source_config,
                  dest_file=dest_file,
                  file_system=file_system,
                  TransferClass=InLineTransfer,
              )
          raise ValueError("File source not specified for transfer.")
docs: Use Netmiko InlineFileTransfer (TCL) to transfer file or config to remote device.
  
          Return (status, msg)
          status = boolean
          msg = details on what happened