code: def upgrade() -> None:
      # ### commands auto generated by Alembic - please adjust! ###
      with op.batch_alter_table("jobs", schema=None) as batch_op:
          batch_op.add_column(
              sa.Column("runner_timestamp", sa.Integer(), nullable=True)
          )
  
imports: import sqlalchemy
  import sqlalchemy_utils
  from alembic import op
label_desc: Use image node_id 1 for calling a global function with example usage: upgrade() without return types