code: def foo(self, **kwargs):
      print(self.workspace)
      file = os.path.join(self.workspace, "out.txt")
      with open(file, "w", encoding="utf-8") as f:
          f.write("Filewriter was here")
  
imports: import os
  from jina import Executor, requests
label_desc: Use image node_id 1 for calling the FilewriterExec obj's underlying member method code with example usage: obj.foo() without return types