common/common-rest/src/main/java/org/apache/servicecomb/common/rest/codec/produce/ProduceProtoBufferProcessor.java [60:72]:
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  private ScopedProtobufSchemaManager getOrCreateScopedProtobufSchemaManager(MicroserviceMeta microserviceMeta) {
    ScopedProtobufSchemaManager scopedProtobufSchemaManager = microserviceMeta.getExtData(EXT_ID);
    if (scopedProtobufSchemaManager == null) {
      synchronized (LOCK) {
        scopedProtobufSchemaManager = microserviceMeta.getExtData(EXT_ID);
        if (scopedProtobufSchemaManager == null) {
          scopedProtobufSchemaManager = new ScopedProtobufSchemaManager();
          microserviceMeta.putExtData(EXT_ID, scopedProtobufSchemaManager);
        }
      }
    }
    return scopedProtobufSchemaManager;
  }
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common/common-rest/src/main/java/org/apache/servicecomb/common/rest/codec/param/BodyProcessorCreator.java [136:148]:
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    private ScopedProtobufSchemaManager getOrCreateScopedProtobufSchemaManager(MicroserviceMeta microserviceMeta) {
      ScopedProtobufSchemaManager scopedProtobufSchemaManager = microserviceMeta.getExtData(EXT_ID);
      if (scopedProtobufSchemaManager == null) {
        synchronized (LOCK) {
          scopedProtobufSchemaManager = microserviceMeta.getExtData(EXT_ID);
          if (scopedProtobufSchemaManager == null) {
            scopedProtobufSchemaManager = new ScopedProtobufSchemaManager();
            microserviceMeta.putExtData(EXT_ID, scopedProtobufSchemaManager);
          }
        }
      }
      return scopedProtobufSchemaManager;
    }
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