145 def calculate_samples_count_per_callchain(callchains):  argument
147   for callchain in callchains:
153 def calculate_samples_count_per_handler(callchains):  argument
158   for callchain in callchains:
164 def write_flamegraph_input_file(output_stream, callchains):  argument
165   for callchain, count in calculate_samples_count_per_callchain(callchains):
169 def write_handlers_report(output_stream, callchains):  argument
170   handler_counters = calculate_samples_count_per_handler(callchains)
238   callchains = collapsed_callchains_generator(
243     write_flamegraph_input_file(program_options.output_stream, callchains)
245     write_handlers_report(program_options.output_stream, callchains)