Padre::Task::SyntaxChecker::XML3pm

  # by default, the text of the current document
  # will be fetched as will the document's notebook page.
  my $task = Padre::Task::SyntaxChecker::XML->new();
  $task->schedule;
  
  my $task2 = Padre::Task::SyntaxChecker::XML->new(
    text => Padre::Documents->current->text_get,
    notebook_page => Padre::Documents->current->editor,
    on_finish => sub { my $task = shift; ... },
  );
  $task2->schedule;