Represents a pulled prompt commit from the LangSmith hub.
public class PromptCommitRepresents a pulled prompt commit from the LangSmith hub. This is the low-level result of calling [PromptClient.pullPromptCommit]. It contains the raw manifest (the LangChain-serialized prompt definition) along with metadata about the commit. Most users should prefer [PromptClient.pull], which returns a [Prompt] that can be invoked directly.