docs: public static String descriptorMethodSource(Class cls) {
          String descriptorClsName = ClassHelper.getInternalName(Descriptor.class.getCanonicalName());
          
          String code = "if (this.descriptor != null) {" + ClassCode.LINE_BREAK  +
                              "return this.descriptor;" + ClassCode.LINE_BREAK  +
                         "}" + ClassCode.LINE_BREAK +
                         "%s descriptor = CodedConstant.getDescriptor(%s);" + ClassCode.LINE_BREAK  +
                         "return (this.descriptor = descriptor);"; 
          
          return String.format(code, descriptorClsName, 
                  ClassHelper.getInternalName(cls.getCanonicalName()) + CodeGenerator.JAVA_CLASS_FILE_SUFFIX);
          
      }