[netmod] Deviate replace leaf type, from typedef with default value

[Kristian Sallberg (krisallb)]

Hello,

I have a question regarding the default value of "/repro:cont/repro:a", after 
deviations have been applied. Since the default value is defined in "typedef 
type_a", and we then replace the type of "/repro:cont/repro:a", should the 
default value of this leaf be removed?

I have not been able to find the answer in the YANG RFCs.

----
module repro {

  yang-version 1.1;
  namespace "rep:ro";
  prefix repro;

  typedef type_a {
    type enumeration {
      enum up {
        value 1;
      }
      enum down {
        value 2;
      }
      enum testing {
        value 3;
      }
    }
    default "down";
  }

  typedef type_b {
    type enumeration {
      enum up {
        value 1;
      }
      enum down {
        value 2;
      }
      enum testing {
        value 3;
      }
    }
  }

  container cont {
    presence "blablablbala";
    leaf a {
      type type_a;
    }
    leaf b {
      type type_b;
      default "down";
    }
  }

  deviation "/repro:cont/repro:a" {
    deviate replace {
      type enumeration {
        enum up {
          value 1;
        }
        enum down {
          value 2;
        }
      }
    }
  }

  deviation "/repro:cont/repro:b" {
    deviate replace {
      type enumeration {
        enum up {
          value 1;
        }
        enum down {
          value 2;
        }
      }
    }
  }
}
----

Best regards, Kristian Sällberg

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