TokenCountEstimator (langchain4j-core 0.21.0 API)

```
public interface TokenCountEstimator
```
Represents an interface for estimating the count of tokens in various text types such as a text, message, prompt, text segment, etc. This can be useful when it's necessary to know in advance the cost of processing a specified text by the LLM.

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method and Description
`int`	`estimateTokenCount(List<ChatMessage> messages)`
`default int`	`estimateTokenCount(Object structuredPrompt)`
`default int`	`estimateTokenCount(Prompt prompt)`
`default int`	`estimateTokenCount(String text)`
`default int`	`estimateTokenCount(TextSegment textSegment)`
`default int`	`estimateTokenCount(UserMessage userMessage)`

default int estimateTokenCount(String text)

default int estimateTokenCount(UserMessage userMessage)

default int estimateTokenCount(Prompt prompt)

default int estimateTokenCount(Object structuredPrompt)

default int estimateTokenCount(TextSegment textSegment)

int estimateTokenCount(List<ChatMessage> messages)

Interface TokenCountEstimator