public Builder setTargetAudienceClientIdBytes(com.google.protobuf.ByteString value) {
            if (value == null) {
              throw new NullPointerException();
            }
            checkByteStringIsUtf8(value);
            targetAudienceClientId_ = value;
            bitField0_ |= 0x00000001;
            onChanged();
            return this;
          }
<pre>
Required. Describes OAuth2 client id of resources protected by
Identity-Aware-Proxy (IAP).
</pre>

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

@param value The bytes for targetAudienceClientId to set.
@return This builder for chaining.
java-websecurityscanner/proto-google-cloud-websecurityscanner-v1/src/main/java/com/google/cloud/websecurityscanner/v1/ScanConfig.java