This plugin receives packages with type "kdeconnect.sftp" and reads the
following fields:

  ip (string): ip of the currently active network on device
  port (string): port where sftp server starts
  user (string): username to connect to sftp server
  password (string): one session password to access sftp server
  path (string): root directory to access device filesystem

This plugin sends packages with type "kdeconnect.sftp" and fills the
following fields:

  startBrowsing (boolean): tell device to start sftp server and notify desktop