code: function getOperation(opType) {
      var opname = Object.keys(APISPEC.operations)
          .filter(function(operation) {
              return operation === opType;
          });
  
      if (!opname.length) {
          throw new ReferenceError('Operation is not supported');
      }
  
      // avoid mutation
      return util._extend({}, APISPEC.operations[opname[0]]);
  }
docs: Retrieves te operation description
  
  @param opType
  @returns {*}