1. A method for utilizing reference/identification (ID) linking in extensible markup language (XML) wrapper code generation in a data processing system, said method comprising: receiving a type document and reference/ID constraints document; and accessing said reference/ID constraints document to translate between XML structures and object structures, wherein said accessing includes: creating a directed constraint graph from said reference/ID constraints document, wherein said directed constraint graph comprises at least one root XML structure that is not referenced by other XML structures and at least one leaf XML structure that does not reference other XML structures; generating a first set of deserialization code for at least one XML structure not in said directed constraint graph, wherein said first set of deserialization code translates said at least one XML structure not in said directed constraint graph into at least one object structure not in said directed constraint graph; creating a second set of deserialization code for said at least one XML leaf structure in said directed constraint graph, wherein said second set of deserialization code translates said at least one leaf XML structure into at least one leaf object structure; generating a third set of deserialization code for at least one next highest XML structure in said directed constraint graph, wherein said third set of deserialization code translates said at least one next highest XML structure into at least one next highest object structure; storing at least one intermediate object structure in at least one temporary hash table, wherein said at least one intermediate object structure is not a root object structure or a leaf object structure; and creating cleanup functions within said first, second, and third sets of deserialization code, wherein said cleanup functions remove all temporary hash tables utilized in object serialization.