public java.lang.String getFallbackStartingOffset() {
      java.lang.Object ref = fallbackStartingOffset_;
      if (!(ref instanceof java.lang.String)) {
        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
        java.lang.String s = bs.toStringUtf8();
        fallbackStartingOffset_ = s;
        return s;
      } else {
        return (java.lang.String) ref;
      }
    }
<pre>
This is the logical starting point to fallback upon should the
specified starting offset be unavailable.

This can be one of the following values:

"begin": This will read from the earliest available message.

"end": This will read only future messages.
</pre>

<code>string fallback_starting_offset = 2;</code>

@return The fallbackStartingOffset.
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/ControlledMode.java