public static im.turms.plugin.livekit.core.proto.models.SipDTMF getDefaultInstance() {
        return DEFAULT_INSTANCE;
    }
<code>string digit = 4;</code>

@param value The bytes for digit to set.
@return This builder for chaining.
turms-plugins/turms-plugin-livekit/src/main/java/im/turms/plugin/livekit/core/proto/models/SipDTMF.java