Method getKey

core/src/main/java/androidx/core/app/Person.java:222–225

Returns the key for this Person or null if no key was provided. This is provided as a unique identifier between other Persons.

()

     * provided as a unique identifier between other {@link Person}s.
     */
    @Nullable
    public String getKey() {
        return mKey;
    }

    /**
     * Returns whether or not this {@link Person} is a machine rather than a human. Used primarily