Mapping API fault into custom fault format instead of OIC default fault format

Summary

Getting exact error format that API gives as OIC error

Content

Error that I get from OIC:

{

  "type": "http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.5.1",

  "title": "Internal Server Error",

  "detail": "Internal server error. Please contact oracle support for details.",

  "o:errorCode": "500",

  "o:errorDetails": [

    {

      "type": "UnMappedFault:execute",

      "instance": "NA",

      "title": "Fault Details : \n<ns2:APIInvocationError xmlns:ns2=\"http://xmlns.oracle.com/cloud/generic/rest/fault/REST/Microsoft_Graph_Employee\"><ns2:type/><ns2:title/><ns2:detail/><ns2:errorCode/><ns2:errorDetails><ns2:type>http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.1</ns2:type><ns2:title>Bad Request</ns2:title><ns2:errorCode>400</ns2:errorCode><ns2:errorPath>&lt;![CDATA[GET