location property
getter/setter pair
      SourceLocation when breakpoint is resolved, UnresolvedSourceLocation when a breakpoint is not resolved.
location can be one of SourceLocation or UnresolvedSourceLocation.
Implementation
dynamic location;SourceLocation when breakpoint is resolved, UnresolvedSourceLocation when a breakpoint is not resolved.
location can be one of SourceLocation or UnresolvedSourceLocation.
dynamic location;