public Builder mergeLinks(com.google.devtools.cloudtrace.v2.Span.Links value) {
      if (linksBuilder_ == null) {
        if (((bitField0_ & 0x00000200) != 0)
            && links_ != null
            && links_ != com.google.devtools.cloudtrace.v2.Span.Links.getDefaultInstance()) {
          getLinksBuilder().mergeFrom(value);
        } else {
          links_ = value;
        }
      } else {
        linksBuilder_.mergeFrom(value);
      }
      if (links_ != null) {
        bitField0_ |= 0x00000200;
        onChanged();
      }
      return this;
    }
<pre>
Links associated with the span. You can have up to 128 links per Span.
</pre>

<code>.google.devtools.cloudtrace.v2.Span.Links links = 10;</code>
java-trace/proto-google-cloud-trace-v2/src/main/java/com/google/devtools/cloudtrace/v2/Span.java