<target name="java.doc.checkCustomAttr">
	<for
		list="@since,@author"
		param="kind"
	>
		<sequential>
			<pathconvert property="java.matched.@{kind}">
				<path>
					<fileset
						dir="${javasrc}"
						includes="**/*.java"
					>
						<not>
							<containsregexp expression="@{kind}"/>
						</not>
					</fileset>
				</path>
			</pathconvert>

			<for
				delimiter=";"
				list="${java.matched.@{kind}}"
				param="file"
			>
				<sequential>
					<echo
						level="warning"
						message="@{file}: missing '@{kind}' clause"
					/>
				</sequential>
			</for>
		</sequential>
	</for>
</target>