vector/src/main/java/org/apache/arrow/vector/complex/BaseRepeatedValueViewVector.java [351:374]:
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  public <T extends ValueVector> AddOrGetResult<T> addOrGetVector(FieldType fieldType) {
    boolean created = false;
    if (vector instanceof NullVector) {
      vector = fieldType.createNewSingleVector(defaultDataVectorName, allocator, repeatedCallBack);
      // returned vector must have the same field
      created = true;
      if (repeatedCallBack != null
          &&
          // not a schema change if changing from ZeroVector to ZeroVector
          (fieldType.getType().getTypeID() != ArrowType.ArrowTypeID.Null)) {
        repeatedCallBack.doWork();
      }
    }

    if (vector.getField().getType().getTypeID() != fieldType.getType().getTypeID()) {
      final String msg =
          String.format(
              "Inner vector type mismatch. Requested type: [%s], actual type: [%s]",
              fieldType.getType().getTypeID(), vector.getField().getType().getTypeID());
      throw new SchemaChangeRuntimeException(msg);
    }

    return new AddOrGetResult<>((T) vector, created);
  }
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vector/src/main/java/org/apache/arrow/vector/complex/BaseLargeRepeatedValueViewVector.java [351:374]:
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  public <T extends ValueVector> AddOrGetResult<T> addOrGetVector(FieldType fieldType) {
    boolean created = false;
    if (vector instanceof NullVector) {
      vector = fieldType.createNewSingleVector(defaultDataVectorName, allocator, repeatedCallBack);
      // returned vector must have the same field
      created = true;
      if (repeatedCallBack != null
          &&
          // not a schema change if changing from ZeroVector to ZeroVector
          (fieldType.getType().getTypeID() != ArrowType.ArrowTypeID.Null)) {
        repeatedCallBack.doWork();
      }
    }

    if (vector.getField().getType().getTypeID() != fieldType.getType().getTypeID()) {
      final String msg =
          String.format(
              "Inner vector type mismatch. Requested type: [%s], actual type: [%s]",
              fieldType.getType().getTypeID(), vector.getField().getType().getTypeID());
      throw new SchemaChangeRuntimeException(msg);
    }

    return new AddOrGetResult<>((T) vector, created);
  }
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