code property
Stable machine-readable code for this error.
By default this is derived from the class name, for example
EmailInvalidFormat becomes email_invalid_format. The derivation reads
runtimeType, which is not stable under code obfuscation (for example
a Flutter release build with --obfuscate). If you persist these codes or
expose them over an API and ship obfuscated builds, override code with an
explicit literal in each error subclass.
Implementation
@override
String get code => 'email_local_part_too_long';