But we want to be able to parameterize that fixed content.

## A "callable" instance { #a-callable-instance }

In Python there's a way to make an instance of a class a "callable".

Not the class itself (which is already a callable), but an instance of that class.

To do that, we declare a method `__call__`:

import java.util.Iterator;
import java.util.Map;
import java.util.concurrent.ConcurrentMap;

/**
 * The reason why a cached entry was removed.
 *
 * @author Charles Fry
 * @since 10.0
 */
@GwtCompatible
public enum RemovalCause {
  /**
   * The entry was manually removed by the user. This can result from the user invoking {@link

application/x-ustar            ustar            # Ustar file
application/vnd.ms-access      mdb mda mde      # MS Access
application/vnd.ms-project     mpp              # MS Project
application/x-wais-source      src              # WAIS Sources
application/zip                zip jar          # ZIP Compressed File
audio/basic                    au snd           # Audio Sound File
audio/x-aiff                   aif aiff aifc    # AIFF Sound File

environment.title = Production

# Does it enable the Framework internal debug? (true only when emergency)
framework.debug = false

# one day: 86400000, three days: 259200000, five days: 432000000, one week: 604800000, one year: 31556926000
# special script :: absolute mode: $(2014/07/10), relative mode: addDay(3).addMonth(4)

environment.title = Production

# Does it enable the Framework internal debug? (true only when emergency)
framework.debug = false

# one day: 86400000, three days: 259200000, five days: 432000000, one week: 604800000, one year: 31556926000
# special script :: absolute mode: $(2014/07/10), relative mode: addDay(3).addMonth(4)

environment.title = Production

# Does it enable the Framework internal debug? (true only when emergency)
framework.debug = false

# one day: 86400000, three days: 259200000, five days: 432000000, one week: 604800000, one year: 31556926000
# special script :: absolute mode: $(2014/07/10), relative mode: addDay(3).addMonth(4)

import java.util.Iterator;
import java.util.Map;
import java.util.concurrent.ConcurrentMap;

/**
 * The reason why a cached entry was removed.
 *
 * @author Charles Fry
 * @since 10.0
 */
@GwtCompatible
public enum RemovalCause {
  /**
   * The entry was manually removed by the user. This can result from the user invoking {@link

     *
     * @param days the number of days from now when the item should expire
     * @return the expiration time in milliseconds since epoch
     */
    protected long getExpiredTime(final int days) {
        final long now = ComponentUtil.getSystemHelper().getCurrentTimeAsLong();
        return now + days * Constants.ONE_DAY_IN_MILLIS;
    }

    /**

	restoreExpiry := lifecycle.ExpectedExpiryTime(time.Now().UTC(), rreq.Days)
	metadata := cloneMSS(objInfo.UserDefined)

	// update self with restore metadata
	if rreq.Type != SelectRestoreRequest {
		objInfo.metadataOnly = true // Perform only metadata updates.
		metadata[xhttp.AmzRestoreExpiryDays] = strconv.Itoa(rreq.Days)
		metadata[xhttp.AmzRestoreRequestDate] = time.Now().UTC().Format(http.TimeFormat)

//
//msgp:tuple VolInfo
type VolInfo struct {
	// Name of the volume.
	Name string

	// Date and time when the volume was created.
	Created time.Time

	// total VolInfo counts
	count int

	// Date and time when the volume was deleted, if Deleted
	Deleted time.Time
}

// FilesInfo represent a list of files, additionally
// indicates if the list is last.
//