metrics size: 171B
res1: { resource = None;
        scope_metrics =
          [{ scope = None;
             metrics =
               [{ name = "sum.foo";
                  description = "";
                  unit_ = "";
                  data =
                    Sum(
                      { data_points =
                          [{ attributes = [];
                             start_time_unix_nano = 42;
                             time_unix_nano = 45;
                             value = As_int(10);
                             exemplars = [];
                             flags = 0;
                           };
                           { attributes = [];
                             start_time_unix_nano = 52;
                             time_unix_nano = 55;
                             value = As_int(20);
                             exemplars = [];
                             flags = 0;
                           }
                           ];
                        aggregation_temporality =
                          Aggregation_temporality_cumulative;
                        is_monotonic = false;
                      });
                };
                { name = "gauge.bar";
                  description = "";
                  unit_ = "";
                  data =
                    Gauge(
                      { data_points =
                          [{ attributes = [];
                             start_time_unix_nano = 42;
                             time_unix_nano = 45;
                             value = As_double(10.);
                             exemplars = [];
                             flags = 0;
                           };
                           { attributes = [];
                             start_time_unix_nano = 52;
                             time_unix_nano = 55;
                             value = As_double(20.);
                             exemplars = [];
                             flags = 0;
                           }
                           ];
                      });
                }
                ];
             schema_url = "";
           }
           ];
        schema_url = "";
      }
res1: { resource = None;
        scope_metrics =
          [{ scope = None;
             metrics =
               [{ name = "sum.foo";
                  description = "";
                  unit_ = "";
                  data =
                    Sum(
                      { data_points =
                          [{ attributes = [];
                             start_time_unix_nano = 42;
                             time_unix_nano = 45;
                             value = As_int(10);
                             exemplars = [];
                             flags = 0;
                           };
                           { attributes = [];
                             start_time_unix_nano = 52;
                             time_unix_nano = 55;
                             value = As_int(20);
                             exemplars = [];
                             flags = 0;
                           }
                           ];
                        aggregation_temporality =
                          Aggregation_temporality_cumulative;
                        is_monotonic = false;
                      });
                };
                { name = "gauge.bar";
                  description = "";
                  unit_ = "";
                  data =
                    Gauge(
                      { data_points =
                          [{ attributes = [];
                             start_time_unix_nano = 42;
                             time_unix_nano = 45;
                             value = As_double(10.);
                             exemplars = [];
                             flags = 0;
                           };
                           { attributes = [];
                             start_time_unix_nano = 52;
                             time_unix_nano = 55;
                             value = As_double(20.);
                             exemplars = [];
                             flags = 0;
                           }
                           ];
                      });
                }
                ];
             schema_url = "";
           }
           ];
        schema_url = "";
      }