@java.lang.Override
    public boolean equals(final java.lang.Object obj) {
      if (obj == this) {
        return true;
      }
      if (!(obj instanceof com.google.devtools.cloudtrace.v2.Span.Link)) {
        return super.equals(obj);
      }
      com.google.devtools.cloudtrace.v2.Span.Link other =
          (com.google.devtools.cloudtrace.v2.Span.Link) obj;

      if (!getTraceId().equals(other.getTraceId())) return false;
      if (!getSpanId().equals(other.getSpanId())) return false;
      if (type_ != other.type_) return false;
      if (hasAttributes() != other.hasAttributes()) return false;
      if (hasAttributes()) {
        if (!getAttributes().equals(other.getAttributes())) return false;
      }
      if (!getUnknownFields().equals(other.getUnknownFields())) return false;
      return true;
    }
<pre>
A set of attributes on the link. Up to 32 attributes can be
specified per link.
</pre>

<code>.google.devtools.cloudtrace.v2.Span.Attributes attributes = 4;</code>
java-trace/proto-google-cloud-trace-v2/src/main/java/com/google/devtools/cloudtrace/v2/Span.java