code: def setLocation(self, location):
      self.location = dict(location)
      self._clearCaches()
  
imports: from fontTools.misc.roundTools import noRound, otRound
  from fontTools.misc.intTools import bit_count
  from fontTools.ttLib.tables import otTables
  from fontTools.varLib.models import supportScalar
  from fontTools.varLib.builder import buildVarRegionList, buildVarStore, buildVarRegion, buildVarData
  from functools import partial
  from collections import defaultdict
  from heapq import heappush, heappop
label_desc: Use image node_id 2 for calling the VarStoreInstancer obj's underlying member method code with example usage: obj.setLocation(location) without return types