logical. By default, prints a report and returns a list invisibly. If
print = FALSE the functions returns a list visibly and do not print the report.
...
Use deep = TRUE on a LAScatalog only. Instead of a shallow inspection it reads
all the files and performs a deep inspection.
Value
A list with three elements named message, warnings and errors. This list is returned
invisibly if print = TRUE. If deep = TRUE a nested list is returned with one element
per file.