public Builder clearFirstValue() {
      bitField0_ = (bitField0_ & ~0x00000001);
      firstValue_ = 0L;
      onChanged();
      return this;
    }
<pre>
The offset of the first entry in the encoded data, or, if only a single
integer was encoded, that single integer's value. If the field is empty or
missing, assume zero.
</pre>

<code>int64 first_value = 1;</code>

@return This builder for chaining.
java-webrisk/proto-google-cloud-webrisk-v1/src/main/java/com/google/webrisk/v1/RiceDeltaEncoding.java