code: def assemble(self, code):
          
          with io.BytesIO() as code_out:
              for ins in code:
                  write_instruction(code_out, code_out.tell(), ins)
              self._code = code_out.getvalue()
docs: Assembles an iterable of :class:`~jawa.util.bytecode.Instruction`
          objects into a method's code body.