code: private Object getMemberKey(ProgramElementDoc doc) {
          if (doc.isConstructor()) {
              return doc.name() + ((ExecutableMemberDoc)doc).signature();
          } else if (doc.isMethod()) {
              return getClassMember((MethodDoc) doc);
          } else if (doc.isField() || doc.isEnumConstant() || doc.isAnnotationTypeElement()) {
              return doc.name();
          } else { // it's a class or interface
              String classOrIntName = doc.name();
              //Strip off the containing class name because we only want the member name.
              classOrIntName = classOrIntName.indexOf('.') != 0 ? classOrIntName.substring(classOrIntName.lastIndexOf('.'), classOrIntName.length()) : classOrIntName;
              return "clint" + classOrIntName;
          }
      }
docs: Return the key to the member map for the given member.