What is the Period.getDays() method in Java?

import java.time.Period;
public class Main{
    public static void main(String[] args) {
        // Define the different attributes of Period object
        int numYears = 5;
        int numMonths = 10;
        int numDays = 13;
        // Construct the Period object using the of() method
        Period period = Period.of(numYears, numMonths, numDays);
        // Get the number of days from the Period object using getDays() method
        System.out.println("The number of days of the period " + period + " is " + period.getDays());
        // Define the different attributes of Period object
        numYears = -5;
        numMonths = -10;
        numDays = -13;
        // Construct the Period object using the of() method
        period = Period.of(numYears, numMonths, numDays);
        // Get the number of days from the Period object using getDays() method
        System.out.println("The number of days of the period " + period + " is " + period.getDays());
    }
}