def IndexDefinitionsToKeys(indexes):
  keyset = set()
  if indexes is not None:
    if indexes.indexes:
      for index in indexes.indexes:
        keyset.add(IndexToKey(index))
  return keyset
Produce :class:`ColumnDataSource` from table-like dict.
dataset/ETHPy150Open CollabQ/CollabQ/.google_appengine/google/appengine/datastore/datastore_index.py/IndexDefinitionsToKeys--crossover with--dataset/ETHPy150Open bokeh/bokeh/bokeh/charts/data_source.py/ChartDataSource.from_dict