code: public void loadDefault(TypeMirror type) throws IOException
      {
          if (type.getKind() != TypeKind.VOID)
          {
              if (Typ.isPrimitive(type))
              {
                  tconst(type, 0);
              }
              else
              {
                  aconst_null();
              }
          }
      }
docs: Load default value to stack depending on type
  @param type
  @throws IOException