debugString

return a string of this PolyUI instance's components and children in a list, like this:

PolyUI(800.0 x 800.0) with 0 components and 2 layouts:
PixelLayout@5bcab519 [Draggable](20.0x570.0, 540.0 x 150.0)
Text@6eebc39e(40.0x570.0, 520.0x32.0)
Block@2f686d1f(40.0x600.0, 120.0x120.0)
Block@7085bdee(220.0x600.0, 120.0x120.0)
Image@6fd02e5(400.0x600.0, 120.0x120.0 (auto))
... 2 more
FlexLayout@73846619 [Scrollable](20.0x30.0, 693.73267 x 409.47168, buffered, needsRedraw)
Block@32e6e9c3(20.0x30.0, 61.111263x42.21167)
Block@5056dfcb(86.11127x30.0, 40.909004x76.32132)
Block@6574b225(132.02026x30.0, 52.75415x52.59597)
Block@2669b199(189.77441x30.0, 76.59671x45.275665)