code: def _get_attribute_dimension(trait_name, mark_type=None):
      """Returns the dimension for the name of the trait for the specified mark.
  
      If `mark_type` is `None`, then the `trait_name` is returned
      as is.
      Returns `None` if the `trait_name` is not valid for `mark_type`.
      """
      if mark_type is None:
          return trait_name
      scale_metadata = mark_type.class_traits()[
          "scales_metadata"
      ].default_args[0]
      return scale_metadata.get(trait_name, {}).get("dimension", None)
  
imports: import sys
  from collections import OrderedDict
  from IPython.display import display
  from ipywidgets import Image
  from numpy import arange, issubdtype, array, column_stack, shape
  from .figure import Figure
  from bqscales import Scale, LinearScale, Mercator
  from .axes import Axis
  from .marks import Lines, Scatter, Hist, Bars, OHLC, Pie, Map, Image, Label, HeatMap, GridHeatMap, topo_load, Boxplot, Bins
  from .interacts import BrushIntervalSelector, FastIntervalSelector, BrushSelector, IndexSelector, MultiSelector, LassoSelector
  from traitlets.utils.sentinel import Sentinel
  import functools
label_desc: Use image node_id 52 for calling a global function with example usage: _get_attribute_dimension(trait_name, mark_type) and returns: scale_metadata, trait_name