class_docstr: Manage the invocation of a WSGI application
class_docstr_tok: ["Manage","the","invocation","of","a","WSGI","application"]
docstr: Override in subclass to buffer data for send to client
  
  It's okay if this method actually transmits the data; BaseHandler
  just separates write and flush operations for greater efficiency
  when the underlying system actually has such a distinction.
docstr_tok: ["Override","in","subclass","to","buffer","data","for","send","to","client","It","'s","okay","if","this","method","actually","transmits","the","data",";","BaseHandler","just","separates","write","and","flush","operations","for","greater","efficiency","when","the","underlying","system","actually","has","such","a","distinction","."]
code: def _write(self, data):
      """Override in subclass to buffer data for send to client
  
      It's okay if this method actually transmits the data; BaseHandler
      just separates write and flush operations for greater efficiency
      when the underlying system actually has such a distinction.
      """
      raise NotImplementedError
  
imports: from .util import FileWrapper, guess_scheme, is_hop_by_hop
  from .headers import Headers
  import sys, os, time
label_desc: Use image node_id 20 for calling the BaseHandler obj's underlying member method code with example usage: obj._write(data) without return types