COUNTER
COUNTER: "COUNTER"
HISTOGRAM
HISTOGRAM: "HISTOGRAM"
OBSERVABLE_COUNTER
OBSERVABLE_COUNTER: "OBSERVABLE_COUNTER"
OBSERVABLE_GAUGE
OBSERVABLE_GAUGE: "OBSERVABLE_GAUGE"
OBSERVABLE_UP_DOWN_COUNTER
OBSERVABLE_UP_DOWN_COUNTER: "OBSERVABLE_UP_DOWN_COUNTER"
UP_DOWN_COUNTER
UP_DOWN_COUNTER: "UP_DOWN_COUNTER"
Supported types of metric instruments.