no-issue: Adding overloads to remove Class<T> param

[ricardozanini]

Many thanks for submitting your Pull Request ❤️!

What this PR does / why we need it:

• Overload some DSL methods to remove the Class<T> requirement
• Refactor the ReflectingUtils class to accept any function, predicate, or consumer usage
• Add Serializable to our functions so we can infer types at runtime

Special notes for reviewers:
I haven't reviewed the changes throughout yet, I should do it tomorrow - improvements in an upcoming commit.

Additional information (if needed):

[Copilot]

Pull request overview

This PR updates the experimental fluent function DSL to infer lambda input types at runtime (via SerializedLambda) so callers can omit explicit Class<T> parameters, and expands the set of supported functional shapes (functions, predicates, consumers, and context-aware functions).

Changes:

• Introduce Serializable* functional interfaces and update DSL entrypoints to accept them for runtime type inference.
• Refactor ReflectionUtils to infer input types from any supported serializable lambda shape.
• Add/adjust tests to exercise the new inferred-type overloads and DSL behavior.

Reviewed changes

Copilot reviewed 14 out of 14 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
experimental/types/src/main/java/io/serverlessworkflow/api/types/func/JavaFilterFunction.java	Makes JavaFilterFunction serializable to support runtime lambda introspection.
experimental/types/src/main/java/io/serverlessworkflow/api/types/func/JavaContextFunction.java	Makes JavaContextFunction serializable to support runtime lambda introspection.
experimental/lambda/src/test/java/io/serverless/workflow/impl/executors/func/WorkflowThenTest.java	Updates DSL usage to the new overload that infers input type (removes explicit Class).
experimental/lambda/src/test/java/io/serverless/workflow/impl/executors/func/FuncDSLReflectionsTest.java	Adds tests covering inferred-type overloads and reflective lambda handling.
experimental/fluent/func/src/main/java/io/serverlessworkflow/fluent/func/dsl/UniqueIdBiFunction.java	Makes the bi-function serializable for inference/introspection.
experimental/fluent/func/src/main/java/io/serverlessworkflow/fluent/func/dsl/SerializablePredicate.java	New serializable predicate type for switch/case inference.
experimental/fluent/func/src/main/java/io/serverlessworkflow/fluent/func/dsl/SerializableFunction.java	New serializable function type for task inference.
experimental/fluent/func/src/main/java/io/serverlessworkflow/fluent/func/dsl/SerializableConsumer.java	New serializable consumer type for consume(...) inference.
experimental/fluent/func/src/main/java/io/serverlessworkflow/fluent/func/dsl/ReflectionUtils.java	Refactors inference to use SerializedLambda and exposes overloads per supported functional type.
experimental/fluent/func/src/main/java/io/serverlessworkflow/fluent/func/dsl/InstanceIdBiFunction.java	Makes the injected-instance-id function serializable for inference/introspection.
experimental/fluent/func/src/main/java/io/serverlessworkflow/fluent/func/dsl/FuncEventFilterSpec.java	Updates JSON event data mapping to accept SerializableFunction and infer input class.
experimental/fluent/func/src/main/java/io/serverlessworkflow/fluent/func/dsl/FuncDSL.java	Adds overloads that remove Class<T> requirements using reflective inference.
experimental/fluent/func/src/main/java/io/serverlessworkflow/fluent/func/dsl/CommonFuncOps.java	Moves and adjusts internal ops to use serializable functional types for inference.
experimental/fluent/func/pom.xml	Formatting-only change.

Comments suppressed due to low confidence (1)

experimental/fluent/func/src/main/java/io/serverlessworkflow/fluent/func/dsl/FuncDSL.java:287

• The Javadoc describes the expected withContext signature as (ctx, payload) -> result, but JavaContextFunction is defined as apply(T payload, WorkflowContextData ctx). Please update the documentation to match the actual parameter order to avoid confusing DSL users.

   * Build a call step for functions that need {@link WorkflowContextData} as the first parameter.
   * The DSL wraps it as a {@link JavaContextFunction} and injects the runtime context.
   *
   * <p>Signature expected: {@code (ctx, payload) -> result}
   *

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[fjtirado]

I think we can remove this comment

[ricardozanini]

Yeah, I'd like to reinforce that we never make this public. I guess we will have to do our due diligence when reviewing thou :)

[Copilot]

Pull request overview

Copilot reviewed 15 out of 15 changed files in this pull request and generated 1 comment.

Comments suppressed due to low confidence (1)

experimental/fluent/func/src/main/java/io/serverlessworkflow/fluent/func/dsl/ReflectionUtils.java:26

• Unused import java.util.function.Function causes a compilation failure here (it's only referenced in Javadoc). Remove the import or update the Javadoc to use a fully-qualified reference (and consider updating the class Javadoc since this utility now supports multiple serializable functional types, not just Function).

import io.serverlessworkflow.api.types.func.JavaContextFunction;
import io.serverlessworkflow.api.types.func.JavaFilterFunction;
import java.lang.invoke.MethodType;
import java.lang.invoke.SerializedLambda;
import java.lang.reflect.Method;
import java.util.function.Function;

/**
 * Specially used by {@link Function} parameters in the Java Function.

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[Copilot]

The Javadoc block is malformed: Extracts the input type... * @param fn has an inline * @param instead of starting a new line, which can break Javadoc rendering/checks. Reformat the comment so each @param tag starts on its own line.

Suggested change

	* Extracts the input type using the resolved interface signature. * @param fn The serializable
	* lambda
	*
	* Extracts the input type using the resolved interface signature.
	*
	* @param fn The serializable lambda