code: void checkClasses(ClassFile cf, CPEntries entries) throws ConstantPoolException {
          for (ConstantPool.CONSTANT_Class_info ci : entries.classes) {
              String name = nameFromRefType(ci.getName());
              if (name != null) {
                  DeprData dd = db.getTypeDeprecated(name);
                  if (dd != null) {
                      printType("scan.out.usesclass", cf, name, dd.isForRemoval());
                  }
              }
          }
      }
docs: Checks Class_info entries in the constant pool.
  
  @param cf the ClassFile of this class
  @param entries constant pool entries collected from this class
  @throws ConstantPoolException if a constant pool entry cannot be found