public Builder clearName() {
      name_ = getDefaultInstance().getName();
      bitField0_ = (bitField0_ & ~0x00000001);
      onChanged();
      return this;
    }
<pre>
Required. The resource name of the span in the following format:

 * `projects/[PROJECT_ID]/traces/[TRACE_ID]/spans/[SPAN_ID]`

`[TRACE_ID]` is a unique identifier for a trace within a project;
it is a 32-character hexadecimal encoding of a 16-byte array. It should
not be zero.

`[SPAN_ID]` is a unique identifier for a span within a trace; it
is a 16-character hexadecimal encoding of an 8-byte array. It should not
be zero.
.
</pre>

<code>string name = 1 [(.google.api.field_behavior) = REQUIRED];</code>

@return This builder for chaining.
java-trace/proto-google-cloud-trace-v2/src/main/java/com/google/devtools/cloudtrace/v2/Span.java