Add deprecated with* methods to FunctionCallingOptions

Add backwards compatibility methods from FunctionCallingOptionsBuilder
to the Builder interface in FunctionCallingOptions. This allows users
to gradually migrate from the old builder style (with* methods) to the
new style while maintaining the same functionality.

Each deprecated method is marked for removal in 1.0.0-M5 and includes
proper Javadoc directing users to the new method names. The methods
are implemented as default methods that delegate to their new
counterparts.

spring-ai-core/src/main/java/org/springframework/ai/model/function/FunctionCallingOptions.java

@@ -172,6 +172,86 @@ interface Builder extends ChatOptions.Builder {
 		@Override
 		Builder topP(Double topP);
 
+		/**
+		 * @deprecated Use {@link #model(String)} instead.
+		 */
+		@Deprecated(forRemoval = true, since = "1.0.0-M5")
+		default Builder withModel(String model) {
+			return model(model);
+		}
+
+		/**
+		 * @deprecated Use {@link #frequencyPenalty(Double)} instead.
+		 */
+		@Deprecated(forRemoval = true, since = "1.0.0-M5")
+		default Builder withFrequencyPenalty(Double frequencyPenalty) {
+			return frequencyPenalty(frequencyPenalty);
+		}
+
+		/**
+		 * @deprecated Use {@link #maxTokens(Integer)} instead.
+		 */
+		@Deprecated(forRemoval = true, since = "1.0.0-M5")
+		default Builder withMaxTokens(Integer maxTokens) {
+			return maxTokens(maxTokens);
+		}
+
+		/**
+		 * @deprecated Use {@link #presencePenalty(Double)} instead.
+		 */
+		@Deprecated(forRemoval = true, since = "1.0.0-M5")
+		default Builder withPresencePenalty(Double presencePenalty) {
+			return presencePenalty(presencePenalty);
+		}
+
+		/**
+		 * @deprecated Use {@link #stopSequences(List)} instead.
+		 */
+		@Deprecated(forRemoval = true, since = "1.0.0-M5")
+		default Builder withStopSequences(List<String> stopSequences) {
+			return stopSequences(stopSequences);
+		}
+
+		/**
+		 * @deprecated Use {@link #temperature(Double)} instead.
+		 */
+		@Deprecated(forRemoval = true, since = "1.0.0-M5")
+		default Builder withTemperature(Double temperature) {
+			return temperature(temperature);
+		}
+
+		/**
+		 * @deprecated Use {@link #functionCallbacks(List)} instead.
+		 */
+		@Deprecated(forRemoval = true, since = "1.0.0-M5")
+		default Builder withFunctionCallbacks(List<FunctionCallback> functionCallbacks) {
+			return functionCallbacks(functionCallbacks);
+		}
+
+		/**
+		 * @deprecated Use {@link #functionCallbacks(FunctionCallback...)} instead.
+		 */
+		@Deprecated(forRemoval = true, since = "1.0.0-M5")
+		default Builder withFunctionCallbacks(FunctionCallback... functionCallbacks) {
+			return functionCallbacks(functionCallbacks);
+		}
+
+		/**
+		 * @deprecated Use {@link #functions(Set)} instead.
+		 */
+		@Deprecated(forRemoval = true, since = "1.0.0-M5")
+		default Builder withFunctions(Set<String> functions) {
+			return functions(functions);
+		}
+
+		/**
+		 * @deprecated Use {@link #function(String)} instead.
+		 */
+		@Deprecated(forRemoval = true, since = "1.0.0-M5")
+		default Builder withFunction(String function) {
+			return function(function);
+		}
+
 	}
 
 }