public Builder clearAnalysis() {
      analysis_ = getDefaultInstance().getAnalysis();
      bitField0_ = (bitField0_ & ~0x00000008);
      onChanged();
      return this;
    }
<pre>
Required. Reference to an existing Analysis resource.
</pre>

<code>
string analysis = 4 [(.google.api.field_behavior) = REQUIRED, (.google.api.resource_reference) = { ... }
</code>

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