public Builder clearCredentialsSecret() {
        credentialsSecret_ = getDefaultInstance().getCredentialsSecret();
        bitField0_ = (bitField0_ & ~0x00000010);
        onChanged();
        return this;
      }
<pre>
Optional. The Resource name of a secret in Secret Manager.

The Azure SAS token must be stored in Secret Manager in JSON format:

{
 "sas_token" : "SAS_TOKEN"
}

[GoogleServiceAccount][google.storagetransfer.v1.GoogleServiceAccount] must
be granted `roles/secretmanager.secretAccessor` for the resource.

See [Configure access to a source: Microsoft Azure Blob Storage]
(https://cloud.google.com/storage-transfer/docs/source-microsoft-azure#secret_manager)
for more information.

If `credentials_secret` is specified, do not specify
[azure_credentials][google.storagetransfer.v1.AzureBlobStorageData.azure_credentials].

Format: `projects/{project_number}/secrets/{secret_name}`
</pre>

<code>string credentials_secret = 7 [(.google.api.field_behavior) = OPTIONAL];</code>

@return This builder for chaining.
java-storage-transfer/proto-google-cloud-storage-transfer-v1/src/main/java/com/google/storagetransfer/v1/proto/TransferTypes.java