public Builder clearDirectoriesFailedToListFromSource() {
        bitField0_ = (bitField0_ & ~0x00020000);
        directoriesFailedToListFromSource_ = 0L;
        onChanged();
        return this;
      }
<pre>
For transfers involving PosixFilesystem only.

Number of listing failures for each directory found at the source.
Potential failures when listing a directory include permission failure or
block failure. If listing a directory fails, no files in the directory are
transferred.
</pre>

<code>int64 directories_failed_to_list_from_source = 18;</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