@Nullable
    @Override
    TypeConversionDescriptor findSimpleAssignmentConversion(PsiAssignmentExpression expression) {
      return new TypeConversionDescriptor("$qualifier$ = $val$", "$qualifier$.setAll($val$)", expression);
    }
@Nullable
    @Override
    TypeConversionDescriptor findSimpleAssignmentConversion(PsiAssignmentExpression expression)