[Feature request] Macro expansion: Access keywords from separate files

Hello,

If I am not mistaken, It appears that OpenFOAM ESI versions do not provide a way to access external keywords from separate files.

OpenFOAM 9 and newer versions allow accessing keywords from separate files with the following syntax:

aValue   $FOAM_CASE/otherFile!foo;

aValue will have the value of $foo from the file otherFile within the case.

My workaround is to use a temporary dictionary with include to access the external keyword, e.g:

temp_dict
{
  #include "otherFile"
}

aValue   $temp_dict/foo;

#remove temp_dict

Is this feature already available that I am not aware of?

Thank you