anchor.diff:            templateFfiExpectedConstantArg.withArguments('isLeaf'),
             node.fileOffset,
             1,
  -          node.location.file);
  +          node.location?.file);
         // Throw so we don't get another error about not replacing
         // `lookupFunction`, which will shadow the above error.
         throw _FfiStaticTypeError();
  
positive.code:         templateFfiNotStatic.withArguments(fromFunctionMethod.name.text),
          node.fileOffset,
          1,
          node.location.file);
      throw _FfiStaticTypeError();
    }
  
  
negative.code:                     funcType.returnType, currentLibrary.isNonNullableByDefault),
                  node.fileOffset,
                  1,
                  node.location?.file);
              return node;
            }
            node.arguments.positional.add(NullLiteral()..parent = node);
  