Moving a Folder based on Folder Content

What does the following mean. I am not well versed in apple script.
set posix_parent_dir to POSIX path of (container of (item theFile) as text)
I understand that this code is used in order to move Folders ( not files), however
I am not familiar with "(container of (item the File) as text)" what syntax should I be using? Can someone
provide an example? Or do I type in verbatim?
I also got an end tell error when trying to use verbatim.
set posix_parent_dir to POSIX path of (container of (item theFile) as text)
I understand that this code is used in order to move Folders ( not files), however
I am not familiar with "(container of (item the File) as text)" what syntax should I be using? Can someone
provide an example? Or do I type in verbatim?
I also got an end tell error when trying to use verbatim.