public Builder mergeFrom(com.alibaba.otter.node.etl.model.protobuf.BatchProto.FileBatch other) {
        if (other == com.alibaba.otter.node.etl.model.protobuf.BatchProto.FileBatch.getDefaultInstance()) return this;
        if (other.hasIdentity()) {
          mergeIdentity(other.getIdentity());
        }
        if (filesBuilder_ == null) {
          if (!other.files_.isEmpty()) {
            if (files_.isEmpty()) {
              files_ = other.files_;
              bitField0_ = (bitField0_ & ~0x00000002);
            } else {
              ensureFilesIsMutable();
              files_.addAll(other.files_);
            }
            onChanged();
          }
        } else {
          if (!other.files_.isEmpty()) {
            if (filesBuilder_.isEmpty()) {
              filesBuilder_.dispose();
              filesBuilder_ = null;
              files_ = other.files_;
              bitField0_ = (bitField0_ & ~0x00000002);
              filesBuilder_ = 
                com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders ?
                   getFilesFieldBuilder() : null;
            } else {
              filesBuilder_.addAllMessages(other.files_);
            }
          }
        }
        this.mergeUnknownFields(other.getUnknownFields());
        return this;
      }
Protobuf type {@code com.alibaba.otter.node.etl.model.protobuf.FileBatch}
node/etl/src/main/java/com/alibaba/otter/node/etl/model/protobuf/BatchProto.java