public Builder clearMetadata() {
            bitField0_ &= ~0x00000040;
            internalGetMutableMetadata().getMutableMap()
                    .clear();
            return this;
        }
<code>map&lt;string, string&gt; metadata = 7;</code>
turms-plugins/turms-plugin-livekit/src/main/java/im/turms/plugin/livekit/core/proto/egress/S3Upload.java