class_docstr: Base class for all processors 
class_docstr_tok: ["Base","class","for","all","processors"]
docstr: Process a Document.  This is the main method of a processor. 
docstr_tok: ["Process","a","Document",".","This","is","the","main","method","of","a","processor","."]
code: def process(self, doc):
      """Process a Document.  This is the main method of a processor."""
      pass
  
imports: from abc import ABC, abstractmethod
  from stanza.models.common.doc import Document
  from stanza.pipeline.registry import NAME_TO_PROCESSOR_CLASS, PIPELINE_NAMES, PROCESSOR_VARIANTS
label_desc: Use image node_id 3 for calling the Processor obj's underlying member method code with example usage: obj.process(doc) without return types