diff -r 5ae3e5665a0b -r cc93757aeca3 src/net/fortuna/ical4j/model/component/Available.java
--- a/src/net/fortuna/ical4j/model/component/Available.java	Thu Feb 12 18:02:00 2015 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,185 +0,0 @@
-/**
- * Copyright (c) 2012, Ben Fortuna
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- *  o Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- *  o Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- *  o Neither the name of Ben Fortuna nor the names of any other contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-package net.fortuna.ical4j.model.component;
-
-import net.fortuna.ical4j.model.Component;
-import net.fortuna.ical4j.model.Parameter;
-import net.fortuna.ical4j.model.Property;
-import net.fortuna.ical4j.model.PropertyList;
-import net.fortuna.ical4j.model.ValidationException;
-import net.fortuna.ical4j.model.parameter.Value;
-import net.fortuna.ical4j.model.property.DtEnd;
-import net.fortuna.ical4j.model.property.DtStart;
-import net.fortuna.ical4j.util.PropertyValidator;
-
-/**
- * $Id$ [05-Apr-2004]
- *
- * Defines an iCalendar Available component.
- *
- * <pre>
- *
- *       availablec  = &quot;BEGIN&quot; &quot;:&quot; &quot;AVAILABLE&quot; CRLF
- *
- *                    availableprop
- *
- *                    &quot;END&quot; &quot;:&quot; &quot;AVAILABLE&quot; CRLF
- *
-          availableprop  = *(
-
-                         ; the following are REQUIRED,
-                         ; but MUST NOT occur more than once
-
-                         dtstamp / dtstart / uid /
-
-                         ; either a 'dtend' or a 'duration' is required
-                         ; in a 'availableprop', but 'dtend' and
-                         ; 'duration' MUST NOT occur in the same
-                         ; 'availableprop', and each MUST NOT occur more
-                         ; than once
-
-                         dtend / duration /
-
-                         ; the following are OPTIONAL,
-                         ; but MUST NOT occur more than once
-
-                         created / last-mod / recurid / rrule /
-                         summary /
-
-                         ; the following are OPTIONAL,
-                         ; and MAY occur more than once
-
-                         categories / comment / contact / exdate /
-                         rdate / x-prop
-
-                         )
- * </pre>
- *
- * @author Ben Fortuna
- * @author Mike Douglass
- */
-public class Available extends Component {
-
-    private static final long serialVersionUID = -2494710612002978763L;
-
-    /**
-     * Default constructor.
-     */
-    public Available() {
-        super(AVAILABLE);
-    }
-
-    /**
-     * Constructor.
-     * @param properties a list of properties
-     */
-    public Available(final PropertyList properties) {
-        super(AVAILABLE, properties);
-    }
-
-    /**
-     * {@inheritDoc}
-     */
-    public final void validate(final boolean recurse)
-            throws ValidationException {
-
-        /*
-         * ; dtstamp / dtstart / uid are required, but MUST NOT occur more than once /
-         */
-        PropertyValidator.getInstance().assertOne(Property.DTSTART,
-                getProperties());
-        PropertyValidator.getInstance().assertOne(Property.DTSTAMP,
-                getProperties());
-        PropertyValidator.getInstance().assertOne(Property.UID,
-                getProperties());
-
-        /*       If specified, the "DTSTART" and "DTEND" properties in
-         *      "VAVAILABILITY" components and "AVAILABLE" sub-components MUST be
-         *      "DATE-TIME" values specified as either date with UTC time or date
-         *      with local time and a time zone reference.
-         */
-        final DtStart start = (DtStart) getProperty(Property.DTSTART);
-        if (Value.DATE.equals(start.getParameter(Parameter.VALUE))) {
-            throw new ValidationException("Property [" + Property.DTSTART
-                    + "] must be a " + Value.DATE_TIME);
-        }
-
-        /*
-         *                ; the following are optional,
-         *                ; but MUST NOT occur more than once
-         *
-         *               created / last-mod / recurid / rrule /
-         *               summary /
-         */
-        PropertyValidator.getInstance().assertOneOrLess(Property.CREATED,
-                getProperties());
-        PropertyValidator.getInstance().assertOneOrLess(Property.LAST_MODIFIED,
-                getProperties());
-        PropertyValidator.getInstance().assertOneOrLess(Property.RECURRENCE_ID,
-                getProperties());
-        PropertyValidator.getInstance().assertOneOrLess(Property.RRULE,
-                getProperties());
-        PropertyValidator.getInstance().assertOneOrLess(Property.SUMMARY,
-                getProperties());
-
-        /*
-         ; either a 'dtend' or a 'duration' is required
-         ; in a 'availableprop', but 'dtend' and
-         ; 'duration' MUST NOT occur in the same
-         ; 'availableprop', and each MUST NOT occur more
-         ; than once
-         */
-        if (getProperty(Property.DTEND) != null) {
-            PropertyValidator.getInstance().assertOne(Property.DTEND,
-                    getProperties());
-            /* Must be DATE_TIME */
-            final DtEnd end = (DtEnd) getProperty(Property.DTEND);
-            if (Value.DATE.equals(end.getParameter(Parameter.VALUE))) {
-                throw new ValidationException("Property [" + Property.DTEND
-                        + "] must be a " + Value.DATE_TIME);
-            }
-        } else {
-            PropertyValidator.getInstance().assertOne(Property.DURATION,
-                    getProperties());
-        }
-
-        /*
-         * ; the following are optional, ; and MAY occur more than once
-         *               categories / comment / contact / exdate /
-         *               rdate / x-prop
-         */
-
-        if (recurse) {
-            validateProperties();
-        }
-    }
-}