From d6ea61b146f7651923489499c94d42f84993d787 Mon Sep 17 00:00:00 2001
From: Remco de Boer <29308176+redeboer@users.noreply.github.com>
Date: Mon, 4 Mar 2024 11:12:38 +0100
Subject: [PATCH] ENH: add `set_dynamics()` method for backward compatibility

---
 src/ampform/helicity/__init__.py | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/src/ampform/helicity/__init__.py b/src/ampform/helicity/__init__.py
index 05e46ae62..d612c3f63 100644
--- a/src/ampform/helicity/__init__.py
+++ b/src/ampform/helicity/__init__.py
@@ -11,6 +11,7 @@
 import logging
 import operator
 import sys
+import warnings
 from collections import OrderedDict, abc
 from functools import reduce
 from typing import (
@@ -377,6 +378,22 @@ def naming(self) -> NameGenerator:
     def reaction(self) -> ReactionInfo:
         return self.__reaction
 
+    def set_dynamics(
+        self, particle_name: str, dynamics_builder: ResonanceDynamicsBuilder
+    ) -> None:
+        """Assign a `.ResonanceDynamicsBuilder` for a specific resonance.
+
+        .. deprecated:: 0.16.0
+            Use the `~.DynamicsSelector.assign()` method of the `.dynamics` attribute
+            instead.
+        """
+        warnings.warn(
+            "set_dynamics() will be removed in favor of dynamics.assign()",
+            category=DeprecationWarning,
+            stacklevel=1,
+        )
+        self.dynamics.assign(particle_name, dynamics_builder)
+
     def formulate(self) -> HelicityModel:
         self.__ingredients.reset()
         main_intensity = self.__formulate_top_expression()