(doc/fluxion/adapter) add/convert docstrings to mkdocstrings format

src/refiners/fluxion/adapters/adapter.py

@@ -8,6 +8,12 @@
 
 
 class Adapter(Generic[T]):
+    """Base class for adapters.
+
+    An Adapter modifies the structure of a [`Module`][refiners.fluxion.layers.Module]
+    (typically by adding, removing or replacing layers), to adapt it to a new task.
+    """
+
     # we store _target into a one element list to avoid pytorch thinking it is a submodule
     _target: "list[T]"
 
@@ -17,10 +23,20 @@ def __init_subclass__(cls, **kwargs: Any) -> None:
 
     @property
     def target(self) -> T:
+        """The target of the adapter."""
         return self._target[0]
 
     @contextlib.contextmanager
     def setup_adapter(self, target: T) -> Iterator[None]:
+        """Setup the adapter.
+
+        This method should be called by the constructor of the adapter.
+        It sets the target of the adapter and ensures that the adapter
+        is not a submodule of the target.
+
+        Args:
+            target: The target of the adapter.
+        """
         assert isinstance(self, fl.Chain)
         assert (not hasattr(self, "_modules")) or (
             len(self) == 0
@@ -37,6 +53,13 @@ def setup_adapter(self, target: T) -> Iterator[None]:
         target._can_refresh_parent = _old_can_refresh_parent
 
     def inject(self: TAdapter, parent: fl.Chain | None = None) -> TAdapter:
+        """Inject the adapter.
+
+        This method replaces the target of the adapter by the adapter inside the parent of the target.
+
+        Args:
+            parent: The parent to inject the adapter into, if the target doesn't have a parent.
+        """
         assert isinstance(self, fl.Chain)
 
         if (parent is None) and isinstance(self.target, fl.ContextModule):
@@ -62,6 +85,11 @@ def inject(self: TAdapter, parent: fl.Chain | None = None) -> TAdapter:
         return self
 
     def eject(self) -> None:
+        """Eject the adapter.
+
+        This method is the inverse of [`inject`][refiners.fluxion.adapters.Adapter.inject],
+        and should leave the target in the same state as before the injection.
+        """
         assert isinstance(self, fl.Chain)
 
         # In general, the "actual target" is the target.