public com.alipay.sofa.jraft.entity.RaftOutter.SnapshotMetaOrBuilder getMetaOrBuilder() {
            return meta_ == null ? com.alipay.sofa.jraft.entity.RaftOutter.SnapshotMeta.getDefaultInstance() : meta_;
        }
<code>optional .jraft.SnapshotMeta meta = 1;</code>
jraft-core/src/main/java/com/alipay/sofa/jraft/entity/LocalStorageOutter.java