undefined_getter
The getter '{0}' isn't defined for the '{1}' function type.
The getter '{0}' isn't defined for the type '{1}'.
Description
#The analyzer produces this diagnostic when it encounters an identifier that appears to be the name of a getter but either isn't defined or isn't visible in the scope in which it's being referenced.
Example
#The following code produces this diagnostic because String has no member
named len:
dart
int f(String s) => s.len;Common fixes
#If the identifier isn't defined, then either define it or replace it with the name of a getter that is defined. The example above can be corrected by fixing the spelling of the getter:
dart
int f(String s) => s.length;