content: """Some common jinja filters."""
  
  from typing import Dict, Any
  
  
  class CustomJinjaFilters(object):
      """Utility filters for jinja2."""
  
      @classmethod
      def filters(cls) -> Dict:
          """Return jinja2 filters that this module provide."""
          return {
              "oc_attr_isdefault": oc_attr_isdefault,
              "openconfig_to_cisco_af": openconfig_to_cisco_af,
              "openconfig_to_eos_af": openconfig_to_eos_af,
          }
  
  
  def oc_attr_isdefault(o: Any) -> bool:
      """Return wether an OC attribute has been defined or not."""
      if not o._changed() and not o.default():
          return True
      if o == o.default():
          return True
      return False
  
  
  def openconfig_to_cisco_af(value: str) -> str:
      """Translate openconfig AF name to Cisco AFI name."""
      if ":" in value:
          value = value.split(":")[1]
  
      mapd = {
          "IPV4_UNICAST": "ipv4 unicast",
          "IPV6_UNICAST": "ipv6 unicast",
          "IPV4_LABELED_UNICAST": "ipv4 unicast",
          "IPV6_LABELED_UNICAST": "ipv6 unicast",
          "L3VPN_IPV4_UNICAST": "vpnv4",
          "L3VPN_IPV6_UNICAST": "vpnv6",
      }
      return mapd[value]
  
  
  def openconfig_to_eos_af(value: str) -> str:
      """Translate openconfig AF name to EOS AFI name."""
      if ":" in value:
          value = value.split(":")[1]
  
      mapd = {"IPV4_UNICAST": "ipv4", "IPV6_UNICAST": "ipv6"}
      return mapd[value]
  