docs: @Pure
  	public VisualizationType getVisualizationType() {
  		if (this.vizualizationType == null) {
  			final AttributeValue val = getAttributeCollection().getAttribute(ATTR_VISUALIZATION_TYPE);
  			if (val != null) {
  				try {
  					this.vizualizationType = val.getJavaObject();
  				} catch (Exception e) {
  					//
  				}
  			}
  			if (this.vizualizationType == null) {
  				this.vizualizationType = VisualizationType.SHAPE_ONLY;
  			}
  		}
  		return this.vizualizationType;
  	}