flyToLookAtOnlyTag method
Property that defines the tour flyToLookAtOnlyTag according to its current properties.
Implementation
String flyToLookAtOnlyTag(
    double lat,
    double long,
    String mode,
    double duration,
    String range,
    String tilt,
    String heading,
    double altitude) {
  String content = '';
  content += '''
 <gx:FlyTo>
        <gx:duration>$duration</gx:duration>
        <gx:flyToMode>$mode</gx:flyToMode>
        <LookAt>
          <longitude>$long</longitude>
          <latitude>$lat</latitude>
          <altitude>$altitude</altitude>
          <heading>$heading</heading>
          <tilt>$tilt</tilt>
          <range>$range</range>
          <altitudeMode>relativeToGround</altitudeMode>
        </LookAt>
      </gx:FlyTo>
''';
  return content;
}