continuousMove method Null safety

XmlDocumentFragment continuousMove(
  1. String profileToken,
  2. PtzPosition velocity,
  3. int? timeout
)

Implementation

static XmlDocumentFragment continuousMove(
    String profileToken, PtzPosition velocity, int? timeout) {
  builder.element('ContinuousMove', nest: () {
    builder.namespace(Xmlns.tptz); //tptz

    builder.element('ProfileToken', nest: () {
      builder.namespace(Xmlns.tptz);
      builder.text(profileToken);
    });

    builder.element('Velocity', nest: () {
      builder.namespace(Xmlns.tptz);

      builder.element('PanTilt', nest: () {
        builder.namespace(Xmlns.tt);
        builder.attribute('x', velocity.panTilt!.x);
        builder.attribute('y', velocity.panTilt!.y);
      });

      builder.element('Zoom', nest: () {
        builder.namespace(Xmlns.tt);

        builder.attribute('x', velocity.zoom != null ? velocity.zoom!.x : 0);
      });
    });

    builder.element('Timeout', nest: () {
      builder.namespace(Xmlns.tptz);
      builder.text('PT${timeout}S');
    });
  });

  return builder.buildFragment();
}