All Implemented Interfaces:
```
public final class BetaFallbackBlock

                    
```
Marks the point in content where one model's output gives way to the next.
One block appears per hop where a preceding model actually ran this turn and declined. A turn routed directly by the sticky decision has no such boundary and carries no block — the signal for whether a fallback model served the response is the presence of a fallback_message entry in usage.iterations, not this block.
The block is treated like a server-tool content block for streaming: it arrives via the standard content_block_start / content_block_stop pair and carries no deltas.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`public final class`	`BetaFallbackBlock.Builder`	A builder for BetaFallbackBlock.

Field Summary

Fields
Modifier and Type	Field	Description

Constructor Summary

Constructors
Constructor	Description

Enum Constant Summary

Enum Constants
Enum Constant	Description

Method Summary

Modifier and Type	Method	Description
`final BetaFallbackBlockParam`	`toParam()`
`final BetaFallbackInfo`	`from()`	The model whose output ends at this point — the model that declined at this hop.
`final BetaFallbackInfo`	`to()`	The fallback model producing the content that follows this block.
`final JsonValue`	`_type()`	Expected to always return the following: `JsonValue.from("fallback")` However, this method can be useful for debugging and logging (e.g.
`final JsonField<BetaFallbackInfo>`	`_from()`	Returns the raw JSON value of from.
`final JsonField<BetaFallbackInfo>`	`_to()`	Returns the raw JSON value of to.
`final Map<String, JsonValue>`	`_additionalProperties()`
`final BetaFallbackBlock.Builder`	`toBuilder()`
`final BetaFallbackBlock`	`validate()`	Validates that the types of all values in this object match their expected types recursively.
`final Boolean`	`isValid()`
`Boolean`	`equals(Object other)`
`Integer`	`hashCode()`
`String`	`toString()`
`final static BetaFallbackBlock.Builder`	`builder()`	Returns a mutable builder for constructing an instance of BetaFallbackBlock.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
- Method Detail
  - toParam
```
 final BetaFallbackBlockParam toParam()
```
  - from
```
 final BetaFallbackInfo from()
```
    The model whose output ends at this point — the model that declined at this hop. When the declining hop is the requested model, its model echoes the top-level model string the caller sent (alias or canonical); when the declining hop is a fallback model, its model is that model's canonical id.
  - to
```
 final BetaFallbackInfo to()
```
    The fallback model producing the content that follows this block. Its model is always the canonical id.
  - _type
```
 final JsonValue _type()
```
    Expected to always return the following:
    JsonValue.from("fallback")
    However, this method can be useful for debugging and logging (e.g. if the server responded with an unexpected value).
  - _from
```
 final JsonField<BetaFallbackInfo> _from()
```
    Returns the raw JSON value of from.
    Unlike from, this method doesn't throw if the JSON field has an unexpected type.
  - _to
```
 final JsonField<BetaFallbackInfo> _to()
```
    Returns the raw JSON value of to.
    Unlike to, this method doesn't throw if the JSON field has an unexpected type.
  - _additionalProperties
```
 final Map<String, JsonValue> _additionalProperties()
```
  - toBuilder
```
 final BetaFallbackBlock.Builder toBuilder()
```
  - validate
```
 final BetaFallbackBlock validate()
```
    Validates that the types of all values in this object match their expected types recursively.
    This method is not forwards compatible with new types from the API for existing fields.
  - isValid
```
 final Boolean isValid()
```
  - equals
```
 Boolean equals(Object other)
```
  - hashCode
```
 Integer hashCode()
```
  - toString
```
 String toString()
```
  - builder
```
 final static BetaFallbackBlock.Builder builder()
```
    Returns a mutable builder for constructing an instance of BetaFallbackBlock.
    The following fields are required:
    .from() .to()

Class BetaFallbackBlock

Nested Class Summary

Field Summary

Constructor Summary

Enum Constant Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

Method Detail

toParam

from

to

_type

_from

_to

_additionalProperties

toBuilder

validate

isValid

equals

hashCode

toString

builder