Macro instrumented::prometheus::register_int_counter_vec

macro_rules! register_int_counter_vec {
    ($ OPTS : expr , $ LABELS_NAMES : expr) => { ... };
    ($ NAME : expr , $ HELP : expr , $ LABELS_NAMES : expr) => { ... };
}

Create an IntCounterVec and registers to default registry.

View docs of register_counter_vec for examples.