class_docstr: Parser evaluation context window
  
  This is a context window which keeps a process open.  Should allow
  for multiple requests without launching new java processes each time.
class_docstr_tok: ["Parser","evaluation","context","window","This","is","a","context","window","which","keeps","a","process","open",".","Should","allow","for","multiple","requests","without","launching","new","java","processes","each","time","."]
code: def process(self, treebank):
      request = build_request(treebank)
      return self.process_request(request)
  
file_path: stanza/stanza/server/parser_eval.py
imports: from collections import namedtuple
  import sys
  import stanza
  from stanza.protobuf import EvaluateParserRequest, EvaluateParserResponse
  from stanza.server.java_protobuf_requests import send_request, build_tree, JavaProtobufContext
  from stanza.models.constituency.tree_reader import read_treebank
label_desc: Use image node_id 2 for calling the EvaluateParser obj's underlying member method code with example usage: obj.process(treebank) and returns: self