user: What is ActionSlot(bpy_struct) and how is it used in Blender Python scripting?

assistant: # ActionSlot(bpy_struct)

base class — [`bpy_struct`](bpy.types.bpy_struct.html#bpy.types.bpy_struct "bpy.types.bpy_struct")

*class* bpy.types.ActionSlot(*bpy_struct*)
:   Identifier for a set of channels in this Action, that can be used by a data-block to specify what it gets animated by

    active
    :   Whether this is the active slot, can be set by assigning to action.slots.active

        Type:
        :   boolean, default False, (readonly)

    handle
    :   Number specific to this Slot, unique within the Action.
        This is used, for example, on a ActionKeyframeStrip to look up the ActionChannelbag for this Slot

        Type:
        :   int in [-inf, inf], default 0, (readonly)

    identifier
    :   Used when connecting an Action to a data-block, to find the correct slot handle. This is the display name, prefixed by two characters determined by the slot’s ID type

        Type:
        :   string, default “”, (never None)

    name_display
    :   Name of the slot, for display in the user interface. This name combined with the slot’s data-block type is unique within its Action

        Type:
        :   string, default “”, (never None)

    select
    :   Selection state of the slot

        Type:
        :   boolean, default False

    show_expanded
    :   Expanded state of the slot

        Type:
        :   boolean, default False

    target_id_type
    :   Type of data-block that this slot is intended to animate; can be set when ‘UNSPECIFIED’ but is otherwise read-only

        - `ACTION`
          Action.
        - `ARMATURE`
          Armature.
        - `BRUSH`
          Brush.
        - `CACHEFILE`
          Cache File.
        - `CAMERA`
          Camera.
        - `COLLECTION`
          Collection.
        - `CURVE`
          Curve.
        - `CURVES`
          Curves.
        - `FONT`
          Font.
        - `GREASEPENCIL`
          Grease Pencil.
        - `GREASEPENCIL_V3`
          Grease Pencil v3.
        - `IMAGE`
          Image.
        - `KEY`
          Key.
        - `LATTICE`
          Lattice.
        - `LIBRARY`
          Library.
        - `LIGHT`
          Light.
        - `LIGHT_PROBE`
          Light Probe.
        - `LINESTYLE`
          Line Style.
        - `MASK`
          Mask.
        - `MATERIAL`
          Material.
        - `MESH`
          Mesh.
        - `META`
          Metaball.
        - `MOVIECLIP`
          Movie Clip.
        - `NODETREE`
          Node Tree.
        - `OBJECT`
          Object.
        - `PAINTCURVE`
          Paint Curve.
        - `PALETTE`
          Palette.
        - `PARTICLE`
          Particle.
        - `POINTCLOUD`
          Point Cloud.
        - `SCENE`
          Scene.
        - `SCREEN`
          Screen.
        - `SOUND`
          Sound.
        - `SPEAKER`
          Speaker.
        - `TEXT`
          Text.
        - `TEXTURE`
          Texture.
        - `VOLUME`
          Volume.
        - `WINDOWMANAGER`
          Window Manager.
        - `WORKSPACE`
          Workspace.
        - `WORLD`
          World.
        - `UNSPECIFIED`
          Unspecified – Not yet specified. When this slot is first assigned to a data-block, this will be set to the type of that data-block.

        Type:
        :   enum in [`'ACTION'`, `'ARMATURE'`, `'BRUSH'`, `'CACHEFILE'`, `'CAMERA'`, `'COLLECTION'`, `'CURVE'`, `'CURVES'`, `'FONT'`, `'GREASEPENCIL'`, `'GREASEPENCIL_V3'`, `'IMAGE'`, `'KEY'`, `'LATTICE'`, `'LIBRARY'`, `'LIGHT'`, `'LIGHT_PROBE'`, `'LINESTYLE'`, `'MASK'`, `'MATERIAL'`, `'MESH'`, `'META'`, `'MOVIECLIP'`, `'NODETREE'`, `'OBJECT'`, `'PAINTCURVE'`, `'PALETTE'`, `'PARTICLE'`, `'POINTCLOUD'`, `'SCENE'`, `'SCREEN'`, `'SOUND'`, `'SPEAKER'`, `'TEXT'`, `'TEXTURE'`, `'VOLUME'`, `'WINDOWMANAGER'`, `'WORKSPACE'`, `'WORLD'`, `'UNSPECIFIED'`], default `'UNSPECIFIED'`

    target_id_type_icon
    :   Type:
        :   int in [-inf, inf], default 0, (readonly)

    users()
    :   Return the data-blocks that are animated by this slot of this action

        Returns:
        :   users

        Return type:
        :   [`bpy_prop_collection`](bpy.types.bpy_prop_collection.html#bpy.types.bpy_prop_collection "bpy.types.bpy_prop_collection") of [`ID`](bpy.types.ID.html#bpy.types.ID "bpy.types.ID")

    duplicate()
    :   Duplicate this slot, including all the animation data associated with it

        Returns:
        :   Duplicated Slot, The slot created by duplicating this one

        Return type:
        :   [`ActionSlot`](#bpy.types.ActionSlot "bpy.types.ActionSlot")

    *classmethod* bl_rna_get_subclass(*id*, *default=None*, */*)
    :   Parameters:
        :   **id** (*str*) – The RNA type identifier.

        Returns:
        :   The RNA type or default when not found.

        Return type:
        :   [`bpy.types.Struct`](bpy.types.Struct.html#bpy.types.Struct "bpy.types.Struct") subclass

    *classmethod* bl_rna_get_subclass_py(*id*, *default=None*, */*)
    :   Parameters:
        :   **id** (*str*) – The RNA type identifier.

        Returns:
        :   The class or default when not found.

        Return type:
        :   type