docs: private SoyNodeCompiler compilerWithNewAppendable(AppendableExpression appendable) {
      return new SoyNodeCompiler(
          thisVar,
          registry,
          detachState,
          variables,
          parameterLookup,
          appendable,
          exprCompiler,
          expressionToSoyValueProviderCompiler,
          lazyClosureCompiler);
    }