class_docstr: Plotter Scalar Bars.
  
  Parameters
  ----------
  plotter : pyvista.Plotter
      Plotter that the scalar bars are associated with.
class_docstr_tok: ["Plotter","Scalar","Bars",".","Parameters","--","--","--","--","--","plotter",":","pyvista.Plotter","Plotter","that","the","scalar","bars","are","associated","with","."]
docstr: Check if a title is a valid actors.
docstr_tok: ["Check","if","a","title","is","a","valid","actors","."]
code: def __contains__(self, key):
      """Check if a title is a valid actors."""
      return key in self._scalar_bar_actors
  
file_path: pyvista/pyvista/plotting/scalar_bars.py
imports: import weakref
  import numpy
  import pyvista
  from pyvista import MAX_N_COLOR_BARS
  from .None import _vtk
  from .colors import Color
  from .tools import parse_font_family
label_desc: Use image node_id 11 for calling the ScalarBars obj's underlying member method code with example usage: obj.__contains__(key) and returns: unknown