删除文档Couchbase Lite iOS

Question

出于某种原因，当我致电[document delete:&e]时，文档未在couchbase中删除。我的意思是我甚至会检查document.is_deleted和document.is_gone的值。但出于某种原因，我的文件没有被删除。现在iOS的couchbase lite有错误吗？生病了我的确切代码。

- (BOOL)deleteOldSettingsDocument{

BOOL old_settings_document_deleted = FALSE;
CBLDocument *v1_setting_document = [self v1SettingsDocument];
if(v1_setting_document){
    NSError *e = nil;
    if(![v1_setting_document deleteDocument:&e]){
        NSLog(@"Error deleting old settings document");
        NSLog(@"%@",e.localizedDescription);
    }
    else{
        old_settings_document_deleted = TRUE;
    }
}
return old_settings_document_deleted;

}