code: def build_converters(streams_header, element_type):
      converters = OrderedDict()
      for line in streams_header:
          (name, alias, input_type, sample_dim) = line.strip().split()
          converters[alias] = get_converter(
              input_type, name, int(sample_dim), element_type
          )
      return converters
  
imports: import sys
  import argparse
  import struct
  import os
  from collections import OrderedDict
label_desc: Use image node_id 4 for calling a global function with example usage: build_converters(streams_header, element_type) and returns: converters