subtreeSize property
      
      Size
      get
      subtreeSize
      
    
    
Gets or sets the size of the subtree (including all descendants) parented by this node.
This informational property is computed during TreeLayout#doLayout. Of course if there are no children, this is just the same as Size. You should probably not be setting this property.
Implementation
_i3.Size get subtreeSize => _i4.getProperty(
      this,
      'subtreeSize',
    );
      
      set
      subtreeSize
      (Size value) 
      
    
    
    
Implementation
set subtreeSize(_i3.Size value) {
  _i4.setProperty(
    this,
    'subtreeSize',
    value,
  );
}