public Builder clearClientId() {
        clientId_ = getDefaultInstance().getClientId();
        bitField0_ = (bitField0_ & ~0x00000010);
        onChanged();
        return this;
      }
<pre>
The Application ID for the app registered in Microsoft Azure Portal.
The application must also be configured with MS Graph permissions
"Files.ReadAll", "Sites.ReadAll" and BrowserSiteLists.Read.All.
</pre>

<code>string client_id = 1;</code>

@return This builder for chaining.
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/SharePointSources.java