How to Async Check Leap Year in Tcl - Code Snippet

# Task: Async Check Leap Year
# Language: Tcl

proc async_check_leap_year() {
    # Implementation for Async Check Leap Year
    set result = ...; # Initialize variable
    # TODO: Implement core logic here
    # Step 1: Prepare data
    # Step 2: Process Async Check Leap Year
    puts("Done");
}