represents method Null safety
- T? value
Whether this entry represents a particular value.
This method is used by showMenu, when it is called, to align the entry
initialValue, if any, to the given
position, and then
later is called on each entry to determine if it should be highlighted (if
the method returns true, the entry will have its background color set to
the ambient ThemeData.highlightColor). If
initialValue is null, then
this method is not called.
If the PopupMenuEntry represents a single value, this should return true if the argument matches that value. If it represents multiple values, it should return true if the argument matches any of them.
bool represents(T? value);