ReturnCellTypes function versus return_celltypes function in RunCellToCell.R

[calathea24]

Hi, recently when I run RunNICHES with CellToCell = TRUE, it gives error:

Error in return_celltypes(node.object) :
could not find function "return_celltypes"

I have a look at the script and found that on line 31 of RunCellToCell.R script, the function calls return_celltypes function but there is no function of that name in the package. Instead I found ReturnCellTypes function. I wonder if this is a misspelling mistake or where I can find "return_celltypes" function?

Thank you.