Translate
    new set.Translate(clauseType, propertyName)
  
  Localizes a clause's properties within another nested property.
var algebra = new set.Algebra(
  new set.Translate("where","$where")
);
algebra.has(
  {$where: {complete: true}},
  {id: 5, complete: true}
) //-> true
This is useful when filters (which are where clauses) are
within a nested object.
Parameters
- clause 
{String}:A clause type. One of
'where','order','paginate','id'. - propertyName 
{String|Object}:The property name which contains the clauses's properties.