code: def process_bytecode(link_refs: Dict[str, Any], bytecode: bytes) -> str:
      
      all_offsets = [y for x in link_refs.values() for y in x.values()]
      # Link ref validation.
      validate_link_ref_fns = (
          validate_link_ref(ref["start"] * 2, ref["length"] * 2)
          for ref in concat(all_offsets)
      )
      pipe(bytecode, *validate_link_ref_fns)
      # Convert link_refs in bytecode to 0's
      link_fns = (
          replace_link_ref_in_bytecode(ref["start"] * 2, ref["length"] * 2)
          for ref in concat(all_offsets)
      )
      processed_bytecode = pipe(bytecode, *link_fns)
      return add_0x_prefix(processed_bytecode)
docs: Replace link_refs in bytecode with 0's.