Optional
True when this result was produced in response to a preview input and the strategy honored it. <Container> uses this to know whether to suppress the source's real chrome (it's rendered as the ghost instead).
preview
<Container>
Items the strategy chose not to place (e.g. grid overflow when capacity is capped). Consumers may render these in an overflow tray or hide them.
True when this result was produced in response to a
previewinput and the strategy honored it.<Container>uses this to know whether to suppress the source's real chrome (it's rendered as the ghost instead).