old_contents: from sqlalchemy import Column, Integer, String, text
  from sqlalchemy.dialects.postgresql import JSON
  from sqlalchemy_utils import ArrowType
  
  from lemur.database import db
  from lemur.plugins.base import plugins
  from lemur.utils import Vault
  
  
  class DnsProvider(db.Model):
      __tablename__ = 'dns_providers'
      id = Column(
          Integer(),
          primary_key=True,
      )
      name = Column(String(length=256), unique=True, nullable=True)
      description = Column(String(length=1024), nullable=True)
      provider_type = Column(String(length=256), nullable=True)
      credentials = Column(Vault, nullable=True)
      api_endpoint = Column(String(length=256), nullable=True)
      date_created = Column(ArrowType(), server_default=text('now()'), nullable=False)
      status = Column(String(length=128), nullable=True)
      options = Column(JSON, nullable=True)
      domains = Column(JSON, nullable=True)
  
      def __init__(self, name, description, provider_type, credentials):
          self.name = name
          self.description = description
          self.provider_type = provider_type
          self.credentials = credentials
  
      @property
      def plugin(self):
          return plugins.get(self.plugin_name)
  
      def __repr__(self):
          return "DnsProvider(name={name})".format(name=self.name)
  
new_contents: from sqlalchemy import Column, Integer, String, text, Text
  from sqlalchemy.dialects.postgresql import JSON
  from sqlalchemy_utils import ArrowType
  
  from lemur.database import db
  from lemur.plugins.base import plugins
  from lemur.utils import Vault
  
  
  class DnsProvider(db.Model):
      __tablename__ = 'dns_providers'
      id = Column(
          Integer(),
          primary_key=True,
      )
      name = Column(String(length=256), unique=True, nullable=True)
      description = Column(Text(), nullable=True)
      provider_type = Column(String(length=256), nullable=True)
      credentials = Column(Vault, nullable=True)
      api_endpoint = Column(String(length=256), nullable=True)
      date_created = Column(ArrowType(), server_default=text('now()'), nullable=False)
      status = Column(String(length=128), nullable=True)
      options = Column(JSON, nullable=True)
      domains = Column(JSON, nullable=True)
  
      def __init__(self, name, description, provider_type, credentials):
          self.name = name
          self.description = description
          self.provider_type = provider_type
          self.credentials = credentials
  
      @property
      def plugin(self):
          return plugins.get(self.plugin_name)
  
      def __repr__(self):
          return "DnsProvider(name={name})".format(name=self.name)
  
subject: convert description to TEXT column