new_contents: """ADS.zupc_id not nullable
  
  Revision ID: 25afbcf91499
  Revises: ac18f0f134d8
  Create Date: 2021-01-12 10:43:59.317874
  
  """
  from alembic import op
  import sqlalchemy as sa
  
  
  # revision identifiers, used by Alembic.
  revision = '25afbcf91499'
  down_revision = 'ac18f0f134d8'
  branch_labels = None
  depends_on = None
  
  
  def upgrade():
      op.alter_column(
          'ADS', 'zupc_id',
          existing_type=sa.INTEGER(),
          nullable=False
      )
  
  
  def downgrade():
      op.alter_column(
          'ADS', 'zupc_id',
          existing_type=sa.INTEGER(),
          nullable=True
      )
  
subject: Add missing migration