How to get file content from custom field?

I have a custom field for uploading files. How can I get the content of the file in the script?
I tried the below script:

my $filecontent=$self->TicketObj->CustomFieldValues('file');
while (my $i=$filecontent->Next){

But can only get below output.

 [info]::RT::CustomFieldValues=HASH(0x55d66fcc1ea0) (eval 1843):19)

How can I get the real file content? Thanks.

I am not sure off the top of my head, what do you see from this?

my $filecontent = $self->TicketObj->FirstCustomFieldValue('file');

@knation Thank you!. FirstCustomFieldValue can get the file name, but not the content. I got the below output with your code:

[402020] [Fri Jul  8 01:16:33 2022] [error]: Scrip 36 IsApplicable failed: Can't locate object method "Load" via package "xxxx.pdf" (perhaps you forgot to load "xxxx.pdf"?) at (eval 1273) line 16.

After checking the database and documents, I finally found the solution.

if (defined $self->TicketObj->FirstCustomFieldValue('file') ) {
    my $files=$self->TicketObj->CustomFieldValues('file');
    while (my $i=$files->Next){
	  my $file_name=$i->Content;
	  my $file_content=$i->LargeContent;