You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: meta.go
    path of file: ./repos/tidb/pkg/metrics
    
    the code of the file until where you have to start completion: // Copyright 2018 PingCAP, Inc.
//
// Licensed under the Apac
    
func InitMetaMetrics() {
	AutoIDHistogram = NewHistogramVec(
		prometheus.HistogramOpts{
			Namespace: "tidb",
			Subsystem: "autoid",
			Name:      "operation_duration_seconds",
			Help:      "Bucketed histogram of processing time (s) of handled autoid.",
			Buckets:   prometheus.ExponentialBuckets(0.0005, 2, 29), // 0.5ms ~ 1.5days
		}, []string{LblType, LblResult})

	MetaHistogram = NewHistogramVec(
		prometheus.HistogramOpts{
			Namespace: "tidb",
			Subsystem: "meta",
			Name:      "operation_duration_seconds",
			Help:      "Bucketed histogram of processing time (s) of tidb meta data operations.",
			Buckets:   prometheus.ExponentialBuckets(0.0005, 2, 29), // 0.5ms ~ 1.5days
		}, []string{LblType, LblResult})

	ResetAutoIDConnCounter = NewCounter(
		prometheus.CounterOpts{
			Namespace: "tidb",
			Subsystem: "meta",
			Name:      "autoid_client_conn_reset_total",
			Help:      "Counter of resetting autoid client connection.",
		})
}