C# port Error enum codes are serialized/deserialized incorrectly

[stishkin]

Expected behavior when Doing error serialization/deserialization

for the Enum Code value to be set to an integer

{
   "error": 465,
   "errors" : []
}

current behavior:

{"code":"unabl_e_t_o_chang_e_jo_b_duration","errors":[]}

AB#43102999