<itemvalue="An unmodifiable list of the UTF-16 code units of this string."/>
<itemvalue="Spacer creates an adjustable, empty spacer that can be used to tune the spacing between widgets in a [Flex] container, like [Row] or [Column]. The [Spacer] widget will take up any available space, so setting the [Flex.mainAxisAlignment] on a flex container that contains a [Spacer] to [MainAxisAlignment.spaceAround], [MainAxisAlignment.spaceBetween], or [MainAxisAlignment.spaceEvenly] will not have any visible effect: the [Spacer] has taken up all of the additional space, therefore there is none left to redistribute."/>
<itemvalue="Spacer creates an adjustable, empty spacer that can be used to tune the spacing between widgets in a [Flex] container, like [Row] or [Column]. The [Spacer] widget will take up any available space, so setting the [Flex.mainAxisAlignment] on a flex container that contains a [Spacer] to [MainAxisAlignment.spaceAround], [MainAxisAlignment.spaceBetween], or [MainAxisAlignment.spaceEvenly] will not have any visible effect: the [Spacer] has taken up all of the additional space, therefore there is none left to redistribute."/>
<itemvalue="A widget that controls how a child of a [Row], [Column], or [Flex] flexes. Using a [Flexible] widget gives a child of a [Row], [Column], or [Flex] the flexibility to expand to fill the available space in the main axis (e.g., horizontally for a [Row] or vertically for a [Column]), but, unlike [Expanded], [Flexible] does not require the child to fill the available space. A [Flexible] widget must be a descendant of a [Row], [Column], or [Flex], and the path from the [Flexible] widget to its enclosing [Row], [Column], or [Flex] must contain only [StatelessWidget]s or [StatefulWidget]s (not other kinds of widgets, like [RenderObjectWidget]s)."/>
<itemvalue="A widget that controls how a child of a [Row], [Column], or [Flex] flexes. Using a [Flexible] widget gives a child of a [Row], [Column], or [Flex] the flexibility to expand to fill the available space in the main axis (e.g., horizontally for a [Row] or vertically for a [Column]), but, unlike [Expanded], [Flexible] does not require the child to fill the available space. A [Flexible] widget must be a descendant of a [Row], [Column], or [Flex], and the path from the [Flexible] widget to its enclosing [Row], [Column], or [Flex] must contain only [StatelessWidget]s or [StatefulWidget]s (not other kinds of widgets, like [RenderObjectWidget]s)."/>
<itemvalue=""/>
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