Fuzz blockers

The following nodes represent call sites where fuzz blockers occur.

Amount of callsites blocked	Calltree index	Parent function	Callsite	Largest blocked function
2	1	...fuzz_load.TestInput	call site: {node_id}	fd.write

Fuzzer calltree


         ...fuzz_load.TestInput

[function] [call site] 00000


           <builtin>.open

[function] [call site] 00001


           fd.write

[function] [call site] 00002


           openpyxl.load_workbook

[function] [call site] 00003


           <builtin>.str

[function] [call site] 00004