/**
     * init graph
     */
    private void init(int nVertices, int nEdges) {
        int nV = nVertices;
        if (nVertices < 1) {
            nV = 1;
        }

        checkVertices(nV);

        int nE = nVertices;
        if (nEdges <= nV) {
            nE = 2 * nE;
        }

        checkEdges(nE);
    }

    private void checkVertices() {

		bugLogIf(ctx, errInvalidArgument)
		return errInvalidArgument
	}

	nv := make(textproto.MIMEHeader, len(v))
	for k, kv := range v {
		// Canonicalize all headers, to remove any duplicates.
		nv[http.CanonicalHeaderKey(k)] = kv
	}

	// Save all supported headers.
	for _, supportedHeader := range supportedHeaders {
		value, ok := nv[http.CanonicalHeaderKey(supportedHeader)]
		if ok {

	NumObjects        uint64        `json:"numObjects" msg:"no"`         // Number of objects rebalanced
	NumVersions       uint64        `json:"numVersions" msg:"nv"`        // Number of versions rebalanced
	Bytes             uint64        `json:"bytes" msg:"bs"`              // Number of bytes rebalanced
	Participating     bool          `json:"participating" msg:"par"`

			NumObjects:  st.NumObjects,
		}
	}
}

// tierStats holds per-tier stats of a remote tier.
type tierStats struct {
	TotalSize   uint64 `msg:"ts"`
	NumVersions int    `msg:"nv"`
	NumObjects  int    `msg:"no"`
}

func (ts tierStats) add(u tierStats) tierStats {
	return tierStats{
		TotalSize:   ts.TotalSize + u.TotalSize,
		NumVersions: ts.NumVersions + u.NumVersions,

  private static final class Digit extends RangesMatcher {
    // Plug the following UnicodeSet pattern into
    // https://unicode.org/cldr/utility/list-unicodeset.jsp
    // [[:Nd:]&[:nv=0:]&[\u0000-\uFFFF]]
    // and get the zeroes from there.

    // Must be in ascending order.
    private static final String ZEROES =

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