code: @SuppressWarnings({"WeakerAccess", "unused"})
     public void  renderViewToCanvas(String viewId, Canvas canvas)
     {
        renderToCanvas(canvas, RenderOptions.create().view(viewId));
     }
docs: Renders this SVG document to a Canvas using the specified view defined in the document.
  <p>
  A View is an special element in a SVG documents that describes a rectangular area in the document.
  Calling this method with a {@code viewId} will result in the specified view being positioned and scaled
  to the viewport.  In other words, use {@link #renderToPicture()} to render the whole document, or use this
  method instead to render just a part of it.
  <p>
  If the {@code <view>} could not be found, nothing will be drawn.
  
  @param viewId the id of a view element in the document that defines which section of the document is to be visible.
  @param canvas the canvas to which the document should be rendered.