isEnabled constant

SemanticsFlag const isEnabled = const SemanticsFlag._(_kIsEnabledIndex)

Whether a semantic node that hasEnabledState is currently enabled.

A disabled element does not respond to user interaction. For example, a button that currently does not respond to user interaction should be marked as disabled.

Implementation 

static const SemanticsFlag isEnabled = const SemanticsFlag._(_kIsEnabledIndex)