code: void setOutputVarInited() {
      outputVars.pop();
      outputVars.push(OutputVar.create(currOutputVarName, true));
      currOutputVarIsInited = true;
    }
docs: Tells this CodeBuilder that the current output variable has already been initialized. This
  causes {@code initOutputVarIfNecessary} and {@code addToOutputVar} to not add initialization
  code even on the first use of the variable.