44 def do_div(stub)  argument
49   resp = stub.div(req)
54 def do_sum(stub)  argument
60   resp = stub.sum(reqs)  # reqs.is_a?(Enumerable)
65 def do_fib(stub)  argument
70   resp = stub.fib(req)
77 def do_div_many(stub)  argument
85   resp = stub.div_many(reqs)
127     stub = Math::Math::Stub.new(options['host'], **stub_opts)
130 …  stub = Math::Math::Stub.new(options['host'], :this_channel_is_insecure, timeout: INFINITE_FUTURE)
134   do_div(stub)
135   do_sum(stub)
136   do_fib(stub)
137   do_div_many(stub)