library;
import self as self;
import "dart:core" as core;

static method method<T extends core::Object* = dynamic>(self::method::T* o) → dynamic {
  if(o is core::String*) {
    let final self::method::T* & core::String* /* '*' & '*' = '*' */ #t1 = o{self::method::T* & core::String* /* '*' & '*' = '*' */} in #t1.{core::String::==}(null) ?{core::int*} null : #t1.{core::String::length};
  }
}
static method main() → dynamic {
  self::method<core::String*>("");
}