"""Add a delete_book helper function to handle book deletion logic.
Revision ID: 7d1f3e5a6c2b
Revises: 4a8c3b7d9e2f
Create Date: 2023-10-12 14:30:00.000000
"""


# revision identifiers, used by Alembic.
revision = '7d1f3e5a6c2b'
down_revision = '4a8c3b7d9e2f'
branch_labels = None
depends_on = None


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


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