yes i am using iris 2023.1

i am getting error on this <method does not exist> on GetColumnType

how it is used?
resultSet.GetCoumnType(i)
 

I am running iris 2023.1, Also I have created an irisusr but i am not aware if that irisusr have access to my /User/abc/workspace 
I am currently working on OS - Mac
If you can help me get access to the workspace to irisusr.

Adding to above question along with column name, I want to get type of data value it is storing in DB. Example - column Name - String, Age - Integer etc.
How can I get this as well.

I am following standard installation steps. Also, it is solely for my own practice and understanding. 
I had created a group - irisusr and user - irisusr before installation as a prerequisite

How about zpm install "git-source-control" 
what exactly it do. Also, can I manage to run git commit and other statements as we do from terminal in vscode or it is specific to UI only.

I tried this but it didn't work. Also here is how I am using args to set value inside.
do args.%Push(requestBody.firstname) 

do args.%Push(requestBody.surname)

then I did the same thing. - 

set resultSet = ##class(%SQL.Statement).%ExecDirect( , sql_whereClause, args...)

Does that mean I should run IRIS system in docker instead of installing it on my host machine?

what about if I am switching branches in my git repo how is that managed in the IRIS instance?

I am still not clear with these video links. What I want it I have a git repo which I cloned and imported in IRIS system. Now we have one repo which is from git and other is inside iris system. Now if i make changes in IRIS system repo shall they be reflected in my original repo or how can i commit those changes.