def to_hash
      {
        :installer => installer,
        :installer_arguments => installer_arguments,
        :iso_path => iso_path,
        :iso_upload_path => iso_upload_path,
        :iso_mount_point => iso_mount_point,
        :auto_update => auto_update,
        :auto_reboot => auto_reboot,
        :no_install => no_install,
        :no_remote => no_remote,
        :yes => yes
      }
    end
def to_hash
      {
        :installer => installer,
        :installer_arguments => installer_arguments,
        :iso_path => iso_path,
        :iso_upload_path => iso_upload_path,
        :iso_mount_point => iso_mount_point,
        :auto_update => auto_update,
        :auto_reboot => auto_reboot,
        :no_install => no_install,
        :no_remote => no_remote,
        :yes => yes
      }
    end
explicit hash, to get symbols in hash keys