code: public static SimpleFeatureBuilder getLasFeatureBuilder( CoordinateReferenceSystem crs ) {
          if (lasSimpleFeatureBuilder == null) {
              SimpleFeatureTypeBuilder b = new SimpleFeatureTypeBuilder();
              b.setName("lasdata");
              b.setCRS(crs);
              b.add(THE_GEOM, Point.class);
              b.add(ID, Integer.class);
              b.add(ELEVATION, Double.class);
              b.add(INTENSITY, Double.class);
              b.add(CLASSIFICATION, Integer.class);
              b.add(IMPULSE, Double.class);
              b.add(NUM_OF_IMPULSES, Double.class);
              final SimpleFeatureType featureType = b.buildFeatureType();
              lasSimpleFeatureBuilder = new SimpleFeatureBuilder(featureType);
          }
          return lasSimpleFeatureBuilder;
      }
docs: Creates a builder for las data.
  
  The attributes are:
  
  <ul>
  <li>the_geom:  a point geometry</li>
  <li>elev</li>
  <li>intensity</li>
  <li>classification</li>
  <li>impulse</li>
  <li>numimpulse</li>
  </ul>
  
  
  @param crs the {@link CoordinateReferenceSystem}.
  @return the {@link SimpleFeatureBuilder builder}.