class_docstr: Bing Maps REST Services
  =======================
  The Bing™ Maps REST Services Application Programming Interface (API)
  provides a Representational State Transfer (REST) interface to
  perform tasks such as creating a static map with pushpins, geocoding
  an address, retrieving imagery metadata, or creating a route.
  
  API Reference
  -------------
  http://msdn.microsoft.com/en-us/library/ff701714.aspx
  
  Dataflow Reference
  ------------------
  https://msdn.microsoft.com/en-us/library/ff701733.aspx
code: def _build_params(self, locations, provider_key, **kwargs):
      self.batch = self.generate_batch(locations)
      self.locations_length = len(locations)
      self.provider_key = provider_key
      self._BATCH_TIMEOUT = kwargs.get("timeout", 60)
  
      return {"input": "csv", "key": provider_key}
  
imports: from __future__ import absolute_import, print_function
  from geocoder.base import OneResult, MultipleResultsQuery
  from geocoder.keys import bing_key
  import time
  import io
  import requests
  import logging
  import sys
label_desc: Use image node_id 4 for calling the BingBatch obj's underlying member method code with example usage: obj._build_params(locations, provider_key) and returns: dict