class_docstr: Base class for web column data sources that can update from data
  URLs.
  
  .. note::
      This base class is typically not useful to instantiate on its own.
code: def __init__(self, *args, **kwargs) -> None:
      super().__init__(*args, **kwargs)
  
imports: from __future__ import annotations
  import logging
  from typing import TYPE_CHECKING, Any, Sequence, Union, overload
  import numpy
  from ..core.has_props import abstract
  from ..core.properties import JSON, Any, Bool, ColumnData, Dict, Enum, Instance, InstanceDefault, Int, Nullable, Object, Readonly, Required, Seq, String
  from ..model import Model
  from ..util.deprecation import deprecated
  from ..util.serialization import convert_datetime_array
  from ..util.warnings import BokehUserWarning, warn
  from .callbacks import CustomJS
  from .filters import AllIndices, Filter, IntersectionFilter
  from .selections import Selection, SelectionPolicy, UnionRenderers
label_desc: Use image node_id 1 to create a new WebDataSource object from inherited base classes: ColumnDataSource with example: obj = WebDataSource()