code: def process(self, document):
      return self.converter.process(document)
  
imports: from stanza.pipeline._constants import TOKENIZE, CONSTITUENCY, DEPPARSE
  from stanza.pipeline.processor import ProcessorVariant, register_processor_variant
  from stanza.server.dependency_converter import DependencyConverter
label_desc: Use image node_id 2 for calling the ConverterDepparse obj's underlying member method code with example usage: obj.process(document) and returns: self