{{file_extension}} variable - needed or not?

[Taitava]

Currently there are:

• {{title}} to get file name without the extension.
• {{file_name}} to get file name with the extension.

Would there be use for {{file_extension}} that would return usually .md? Obsidian can also show image files and PDFs, so I think in some cases it might be beneficial to be able to check what the extension is - although it can be determined from {{file_name}} using regex.

One detail: the value would include a preceding dot ., but could be opted-out with an argument like :no-dot.
Edit:

• {{file_extension:no-dot}}: No preceding dot is included.
• {{file_extension:with-dot}}: A preceding dot is included if the extension is not empty.

[FelipeRearden]

I like the idea @Taitava !!!!