docs: public void emitIndent() {
          Level lvl = currentLevel();
          if(bufpos == 0 && marker == 0) {
              return;
          }
          if(lvl.spaces >= 0) {
              byte[] spcs = new byte[lvl.spaces + 2];
              spcs[0] = '\n';
              spcs[lvl.spaces + 1] = 0;
              for(int i=0; i<lvl.spaces; i++) {
                  spcs[i+1] = ' ';
              }
              write(Pointer.create(spcs, 0), lvl.spaces + 1);
          }
      }