code: def getImageFormatClass(self, imageFormat):
      try:
          return E_B_D_T_.table_E_B_D_T_.getImageFormatClass(
              self, imageFormat
          )
      except KeyError:
          return cbdt_bitmap_classes[imageFormat]
  
imports: from fontTools.misc.textTools import bytesjoin
  from fontTools.misc import sstruct
  from .None import E_B_D_T_
  from .BitmapGlyphMetrics import BigGlyphMetrics, bigGlyphMetricsFormat, SmallGlyphMetrics, smallGlyphMetricsFormat
  from .E_B_D_T_ import BitmapGlyph, BitmapPlusSmallMetricsMixin, BitmapPlusBigMetricsMixin
  import struct
label_desc: Use image node_id 1 for calling the table_C_B_D_T_ obj's underlying member method code with example usage: obj.getImageFormatClass(imageFormat) and returns: E_B_D_T_, cbdt_bitmap_classes