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

assistant: # IDOverrideLibraryPropertyOperation(bpy_struct)

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

*class* bpy.types.IDOverrideLibraryPropertyOperation(*bpy_struct*)
:   Description of an override operation over an overridden property

    flag
    :   Status flags

        - `MANDATORY`
          Mandatory – For templates, prevents the user from removing predefined operation (NOT USED).
        - `LOCKED`
          Locked – Prevents the user from modifying that override operation (NOT USED).
        - `IDPOINTER_MATCH_REFERENCE`
          Match Reference – The ID pointer overridden by this operation is expected to match the reference hierarchy.
        - `IDPOINTER_ITEM_USE_ID`
          ID Item Use ID Pointer – RNA collections of IDs only, the reference to the item also uses the ID pointer itself, not only its name.

        Type:
        :   enum set in {`'MANDATORY'`, `'LOCKED'`, `'IDPOINTER_MATCH_REFERENCE'`, `'IDPOINTER_ITEM_USE_ID'`}, default set(), (readonly)

    operation
    :   What override operation is performed

        - `NOOP`
          No-Op – Does nothing, prevents adding actual overrides (NOT USED).
        - `REPLACE`
          Replace – Replace value of reference by overriding one.
        - `DIFF_ADD`
          Differential – Stores and apply difference between reference and local value (NOT USED).
        - `DIFF_SUB`
          Differential – Stores and apply difference between reference and local value (NOT USED).
        - `FACT_MULTIPLY`
          Factor – Stores and apply multiplication factor between reference and local value (NOT USED).
        - `INSERT_AFTER`
          Insert After – Insert a new item into collection after the one referenced in subitem_reference_name/_id or _index.
        - `INSERT_BEFORE`
          Insert Before – Insert a new item into collection before the one referenced in subitem_reference_name/_id or _index (NOT USED).

        Type:
        :   enum in [`'NOOP'`, `'REPLACE'`, `'DIFF_ADD'`, `'DIFF_SUB'`, `'FACT_MULTIPLY'`, `'INSERT_AFTER'`, `'INSERT_BEFORE'`], default `'REPLACE'`, (readonly)

    subitem_local_id
    :   Collection of IDs only, used to disambiguate between potential IDs with same name from different libraries

        Type:
        :   [`ID`](bpy.types.ID.html#bpy.types.ID "bpy.types.ID"), (readonly)

    subitem_local_index
    :   Used to handle changes into collection

        Type:
        :   int in [-1, inf], default -1, (readonly)

    subitem_local_name
    :   Used to handle changes into collection

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

    subitem_reference_id
    :   Collection of IDs only, used to disambiguate between potential IDs with same name from different libraries

        Type:
        :   [`ID`](bpy.types.ID.html#bpy.types.ID "bpy.types.ID"), (readonly)

    subitem_reference_index
    :   Used to handle changes into collection

        Type:
        :   int in [-1, inf], default -1, (readonly)

    subitem_reference_name
    :   Used to handle changes into collection

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

    *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