# customerName

> **Method** in `langsmith`

📖 [View in docs](https://reference.langchain.com/javascript/langsmith/com/langchain/smith/models/info/InfoListResponse/customerName)

unexpectedly missing or null (e.g.

## Signature

```java
public String customerName()
```

## Description

- Throws `LangChainInvalidDataException`: if the JSON field has an unexpected type or is
  unexpectedly missing or null (e.g. if the server responded with an unexpected value).

## Returns

`String`

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[View source on GitHub](https://github.com/langchain-ai/langsmith-java/blob/513d207b80b0b62a190201034b1759e6f582aa8e/langsmith-java-core/src/main/kotlin/com/langchain/smith/models/info/InfoListResponse.kt#L771)