chore: update api.txt

Author: thatfiredev

firebase-ai/api.txt

@@ -972,16 +972,18 @@ package com.google.firebase.ai.type {
   }
 
   public final class UsageMetadata {
-    ctor public UsageMetadata(int promptTokenCount, Integer? candidatesTokenCount, int totalTokenCount, java.util.List<com.google.firebase.ai.type.ModalityTokenCount> promptTokensDetails, java.util.List<com.google.firebase.ai.type.ModalityTokenCount> candidatesTokensDetails);
+    ctor public UsageMetadata(int promptTokenCount, Integer? candidatesTokenCount, int totalTokenCount, java.util.List<com.google.firebase.ai.type.ModalityTokenCount> promptTokensDetails, java.util.List<com.google.firebase.ai.type.ModalityTokenCount> candidatesTokensDetails, int thoughtsTokenCount);
     method public Integer? getCandidatesTokenCount();
     method public java.util.List<com.google.firebase.ai.type.ModalityTokenCount> getCandidatesTokensDetails();
     method public int getPromptTokenCount();
     method public java.util.List<com.google.firebase.ai.type.ModalityTokenCount> getPromptTokensDetails();
+    method public int getThoughtsTokenCount();
     method public int getTotalTokenCount();
     property public final Integer? candidatesTokenCount;
     property public final java.util.List<com.google.firebase.ai.type.ModalityTokenCount> candidatesTokensDetails;
     property public final int promptTokenCount;
     property public final java.util.List<com.google.firebase.ai.type.ModalityTokenCount> promptTokensDetails;
+    property public final int thoughtsTokenCount;
     property public final int totalTokenCount;
   }