text: """empty message
  
  Revision ID: ac483cfeb230
  Revises: b29e2c4bf8c9
  Create Date: 2017-10-11 10:16:39.682591
  
  """
  
  # revision identifiers, used by Alembic.
  revision = 'ac483cfeb230'
  down_revision = 'b29e2c4bf8c9'
  
  from alembic import op
  import sqlalchemy as sa
  from sqlalchemy.dialects import postgresql
  
  
  def upgrade():
      op.alter_column('certificates', 'name',
                      existing_type=sa.VARCHAR(length=128),
                      type_=sa.String(length=256))
  
  
  def downgrade():
      op.alter_column('certificates', 'name',
                      existing_type=sa.VARCHAR(length=256),
                      type_=sa.String(length=128))
  