code: def preprocess(function, current=None):
      """
      Turns a param.depends watch call into a preprocessor method, i.e.
      skips all downstream events triggered by it.
      NOTE: This is a temporary hack while the addition of preprocessors
            in param is under discussion. This only works for the first
            method which depends on a particular parameter.
            (see https://github.com/pyviz/param/issues/332)
      """
      if current is None:
          current = []
  
      def inner(*args, **kwargs):
          self = args[0]
          self.param._BATCH_WATCH = True
          function(*args, **kwargs)
          self.param._BATCH_WATCH = False
          self.param._watchers = []
          self.param._events = []
  
      return inner
  
imports: import sys
  from inspect import getmro
  import param
  from panel.layout import Row, Tabs
  from panel.pane import PaneBase
  from panel.util import param_name
  from .core import DynamicMap, Element, HoloMap, Layout, Overlay, Store, ViewableElement
  from .core.util import isscalar
  from .element import Curve, Path, Points, Polygons, Rectangles, Table
  from .plotting.links import DataLink, RectanglesTableLink, SelectionLink, VertexTableLink
  from .streams import BoxEdit, CurveEdit, PointDraw, PolyDraw, PolyEdit, Selection1D
label_desc: Use image node_id 1 for calling a global function with example usage: preprocess(function, current) and returns: inner