"""Add a new update_book helper function
Revision ID: 4a8c3b7d9e2f
Revises: 3c1332db
Create Date: 2023-11-15 10:25:00.000000
"""

# revision identifiers, used by Alembic.
revision = '4a8c3b7d9e2f'
down_revision = '3c1332db'
branch_labels = None
depends_on = None


def upgrade():
    # This migration only adds a helper method to the Book model
    # No database schema changes are needed
    pass


def downgrade():
    # No database schema changes to revert
    pass