docs: function() {
      if (this.input.length) return;
      if (this.interpolated) {
        this.error('NO_END_BRACKET', 'End of line was reached with no closing bracket for interpolation.');
      }
      for (var i = 0; this.indentStack[i]; i++) {
        this.tokens.push(this.tok('outdent'));
      }
      this.tokens.push(this.tok('eos'));
      this.ended = true;
      return true;
    }