remove placehodler

Author: dlarocque

firebase-ai/api.txt

@@ -1257,7 +1257,7 @@ package com.google.firebase.ai.type {
   }
 
   public final class UsageMetadata {
-    ctor @Deprecated 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, int toolUsePromptTokenCount, java.util.List<com.google.firebase.ai.type.ModalityTokenCount> toolUsePromptTokensDetails);
+    ctor @Deprecated 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();

firebase-ai/src/main/kotlin/com/google/firebase/ai/type/UsageMetadata.kt

@@ -42,8 +42,7 @@ internal constructor(
   public val candidatesTokensDetails: List<ModalityTokenCount>,
   public val thoughtsTokenCount: Int,
   public val toolUsePromptTokenCount: Int,
-  public val toolUsePromptTokensDetails: List<ModalityTokenCount>,
-  placeholder: Unit
+  public val toolUsePromptTokensDetails: List<ModalityTokenCount>
 ) {
 
   @Deprecated("Not intended for public use")
@@ -53,19 +52,16 @@ internal constructor(
     totalTokenCount: Int,
     promptTokensDetails: List<ModalityTokenCount>,
     candidatesTokensDetails: List<ModalityTokenCount>,
-    thoughtsTokenCount: Int,
-    toolUsePromptTokenCount: Int,
-    toolUsePromptTokensDetails: List<ModalityTokenCount>
+    thoughtsTokenCount: Int
   ) : this(
     promptTokenCount,
     candidatesTokenCount,
     totalTokenCount,
     promptTokensDetails,
     candidatesTokensDetails,
     thoughtsTokenCount,
-    toolUsePromptTokenCount,
-    toolUsePromptTokensDetails,
-    Unit
+    0,
+    emptyList()
   )
 
   @Serializable